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 to solve a word problem?

Back

Identify the two quantities that are being compared, set them as a fraction, and cross-multiply to solve.

Front

If 3 pounds of granola cost $3.75, how much does 1 pound cost?

Back

$1.25 per pound.

Front

What is the ratio of sugar to flour if the recipe calls for 1 cup of sugar for every 5 cups of flour?

Back

1:5.

Front

How do you find the total amount of a currency when given an exchange rate?

Back

Multiply the amount of money you have by the exchange rate.

Front

If Krystle sold 56 subscriptions in 72 days, how do you find her rate of sales per day?

Back

Divide 56 by 72 to find the rate of subscriptions sold per day.

Front

What is the formula to find the total number of items sold over a longer period based on a known rate?

Back

Total items = (Rate of items sold per day) x (Total days).

Front

If Carol practices 17 hours in 2 weeks, how many hours does she practice in 1 week?

Back

8.5 hours per week.

Front

How do you calculate the total practice hours in 5 weeks if you know the hours practiced in 2 weeks?

Back

Multiply the hours practiced in 2 weeks by 2.5.

Front

What is the relationship between ratios and proportions?

Back

Ratios compare two quantities, while proportions show that two ratios are equal.