In this video they are showing how to use proportions to solve word problems. In the first example they used 2/3 is equal to x/6. To solve for x, you begin by cross multiplying setting up and equation 3x=12. Next, divide 12 by 3 which equals 4. So x equals 4. In the next example, she has given a situation where she is making a ranch dip using a ranch powder and sour cream. She want to use 80oz of sour cream and she wants to know how much powder ranch she will need. She know that for 16oz of sour cream she needs to use 3 tablespoons of powder. So to solve this problem she sets up a proportion equation such as this, 3/16 = x/30. She solves this by first cross multiplying 16x=240. Next she will divide 240 by 16, which equals 15 so she know she has to use 15 tablespoons of powder ranch in 80oz of sour cream to make her dip.
 Hot
 Latest

How To: Remember "greater than" & "less than" symbols

How To: Find extra points for a parabola (quadractic equation)

How To: Use ">" (greater than) and "<" (less than) symbols

How To: Find the lowest common multiple/LCM with a factor tree

How To: Calculate Faster Than a Calculator

How To: Find a number given Its percent

How To: Find the Percent Given Two Numbers

How To: Find and sketch the domain of a multivariable function

How To: Write a logarithm as a sum or difference of logarithms

How To: Find the 100th term in a sequence

How To: Convert fractions to decimals quickly and easily

How To: Quickly find the area of a trapezoid

How To: Find the opposite and absolute value of a number

How To: Draw a perpendicular line from a point on a line

How To: Do long division without a calculator

How To: Divide small numbers by big numbers

How To: Find the area of a parallelogram using geometry

How To: Convert Fahrenheit to Celsius with a formula

How To: Find a missing coordinate given: coordinate & equation

How To: Do normal probability calculations on a calculator

How To: Remember "greater than" & "less than" symbols

How To: Find extra points for a parabola (quadractic equation)

How To: Use ">" (greater than) and "<" (less than) symbols

How To: Find the lowest common multiple/LCM with a factor tree

How To: Calculate Faster Than a Calculator

How To: Find a number given Its percent

How To: Find the Percent Given Two Numbers

How To: Find and sketch the domain of a multivariable function

How To: Write a logarithm as a sum or difference of logarithms

How To: Find the 100th term in a sequence

How To: Convert fractions to decimals quickly and easily

How To: Quickly find the area of a trapezoid

How To: Find the opposite and absolute value of a number

How To: Draw a perpendicular line from a point on a line

How To: Do long division without a calculator

How To: Divide small numbers by big numbers

How To: Find the area of a parallelogram using geometry

How To: Convert Fahrenheit to Celsius with a formula

How To: Find a missing coordinate given: coordinate & equation

How To: Do normal probability calculations on a calculator
Be the First to Comment
Share Your Thoughts