solve proportions flashcard

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

If 10 apples make 5 quarts of cider, how many apples are needed for 4 quarts?

Back

8 apples.

Front

What are two equal ratios or rates called?

Back

Proportion.

Front

Solve for x: 2/3 = x/6

Back

x = 4.

Front

Solve for w: 5/w = 10/2

Back

w = 1.

Front

What is the cross-multiplication method?

Back

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

Front

If a/b = c/d, what is the value of ad?

Back

ad = bc.

Front

What is a unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity.

Front

If 3/4 = x/16, what is x?

Back

x = 12.