Proportion Word Problems

Front

What is a proportion?

Back

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

Front

How do you set up a proportion from a word problem?

Back

Identify the two quantities being compared and write them as a fraction. Set the two fractions equal to each other.

Front

If 10 out of 14 students enjoy baseball, what is the proportion of students who enjoy baseball?

Back

The proportion is 10/14 or 5/7.

Front

How do you find the total number of students who enjoy baseball if you know the proportion and total number of students?

Back

Multiply the total number of students by the proportion of students who enjoy baseball.

Front

What is the formula to find the missing value in a proportion?

Back

If a/b = c/d, then ad = bc.

Front

If 40 out of 56 students enjoy baseball, how many students enjoy baseball in a class of 77?

Back

Set up the proportion: 40/56 = x/77, then solve for x.

Front

What is the ratio of cups of sugar to cups of flour if the ratio is 1:5?

Back

For every 1 cup of sugar, there are 5 cups of flour.

Front

If Myesha uses 25 cups of flour, how much sugar is needed based on the ratio 1:5?

Back

5 cups of sugar are needed.

Front

How do you determine the number of female elephants in a population if you know the ratio of females in a sample?

Back

Use the ratio from the sample to find the total number of females in the entire population.

Front

If 35 out of 42 trapped elephants are female, what is the proportion of female elephants?

Back

The proportion is 35/42.