Algebra Proportions

Front

What is a proportion?

Back

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

Front

How do you solve for x in a proportion?

Back

To solve for x in a proportion, cross-multiply and then isolate x.

Front

What is an equivalent fraction?

Back

An equivalent fraction is a fraction that represents the same value as another fraction, even though the numbers may be different.

Front

If 1.5 cups of milk is to 3 cups of flour, what is the ratio of milk to flour?

Back

The ratio of milk to flour is 1:2.

Front

How do you find an equivalent fraction for 5/6?

Back

Multiply both the numerator and denominator by the same non-zero number.

Front

What is the cross-multiplication method?

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

If a recipe calls for 2 cups of sugar for every 5 cups of flour, how much sugar is needed for 15 cups of flour?

Back

6 cups of sugar are needed.

Front

What is the value of x in the proportion 4/x = 8/16?

Back

x = 2.

Front

How do you check if two fractions are equivalent?

Back

Cross-multiply the fractions and see if the products are equal.

Front

What is the first step in solving the proportion 3/4 = x/12?

Back

Cross-multiply to get 3 * 12 = 4 * x.