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 variable.

Front

What does cross-multiplication mean?

Back

Cross-multiplication involves multiplying the numerator of one fraction by the denominator of the other fraction.

Front

Back

x = 1.5

Front

Back

g = 6

Front

Back

x = 9

Front

Back

Cross-multiply to get 8x = 12.

Front

What is the relationship between ratios in a proportion?

Back

The ratios in a proportion are equivalent, meaning they represent the same relationship.

Front

Back

x = 10.

Front

How can you check if two ratios form a proportion?

Back

You can check by cross-multiplying and seeing if the products are equal.