Proportions or ratios are fundamental concepts of mathematics. A proportions is an equation that states that two ratios are equal. Hence proportion can be written in two ways as a:b=c:d or a/b=c/d. In these equations a and d are called as extremes and b,c are called as means. So when working with proportions we can state that product of the means is equal to the product of the extremes i.e. a*d = b*c. This is obtained by cross multiplying the second form of proportions. In mathematics you are frequently faced with proportion problems where one number is missing in a proportion. To solve such problems cross multiply the numbers to obtain the result. This video teaches proportions and solves some problems involving proportions.
 Hot
 Latest

How To: Find standard deviation

How To: Figure out the domain & range of a piecewise function

How To: Find the 100th term in a sequence

How To: Calculate percent composition for chemistry

How To: Find the formula of a piecewise function given a graph

How To: Find the standard deviation with the ZScore formula

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

How To: Convert Fahrenheit to Celsius with a formula

How To: Convert between diameter and radius

How To: Calculate Faster Than a Calculator

How To: Find the slope of a line given 2 points with fractions

How To: Find the area & perimeter of triangles & squares

How To: Find a missing side of a triangle, similar to another

How To: Write a slopeintercept equation given an XY table

How To: Do long division without a calculator

How To: Find a slope of a straight line with: Ax + By + C = 0

How To: Find the area of a triangle when given 2 sides & angle

How To: Find the Percent Given Two Numbers

How To: Find a number given Its percent

How To: Find the Volume of Composite Figures (Also Called Composite Shapes)

How To: Find standard deviation

How To: Figure out the domain & range of a piecewise function

How To: Find the 100th term in a sequence

How To: Calculate percent composition for chemistry

How To: Find the formula of a piecewise function given a graph

How To: Find the standard deviation with the ZScore formula

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

How To: Convert Fahrenheit to Celsius with a formula

How To: Convert between diameter and radius

How To: Calculate Faster Than a Calculator

How To: Find the slope of a line given 2 points with fractions

How To: Find the area & perimeter of triangles & squares

How To: Find a missing side of a triangle, similar to another

How To: Write a slopeintercept equation given an XY table

How To: Do long division without a calculator

How To: Find a slope of a straight line with: Ax + By + C = 0

How To: Find the area of a triangle when given 2 sides & angle

How To: Find the Percent Given Two Numbers

How To: Find a number given Its percent

How To: Find the Volume of Composite Figures (Also Called Composite Shapes)
Be the First to Comment
Share Your Thoughts