Solving Proportions

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply the terms and then solve for the unknown variable.

Front

What does it mean if two ratios form a proportion?

Back

It means that the two ratios are equivalent, meaning they represent the same relationship.

Front

Back

r = 32

Front

Solve for x: 2x = 52

Back

x = 26

Front

Back

v = 35

Front

Solve for x: 4x + 8 = 40

Back

x = 8

Front

What is cross-multiplication?

Back

Cross-multiplication is a method used to solve proportions by multiplying the numerator of one ratio by the denominator of the other ratio.

Front

Back

No, they are not equal.

Front

What is the first step in solving a proportion?

Back

The first step is to set the two ratios equal to each other.