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 solve a proportion?

Back

To solve a proportion, cross-multiply the terms and then solve for the unknown variable.

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division.

Front

If a bird flies 35 meters in 10 seconds, how do you find its speed?

Back

Speed = Distance / Time, so Speed = 35 meters / 10 seconds = 3.5 meters per second.

Front

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

Back

Identify the two ratios involved in the problem and set them equal to each other.

Front

What is the unit rate?

Back

The unit rate is a comparison of two different quantities when they are combined together, expressed as a quantity per one unit.

Front

If 3 pounds of apples cost $0.90, what is the cost per pound?

Back

Cost per pound = Total cost / Total pounds = $0.90 / 3 = $0.30 per pound.

Front

How do you find the width of a label if the height is given and the ratio is known?

Back

Use the ratio to set up a proportion: Height/Width = 5/19, then solve for Width.

Front

What is the formula for finding the total cost based on unit price?

Back

Total Cost = Unit Price x Quantity.

Front

If the exchange rate is $1 for every 4 Ringgits, how do you calculate the amount in Ringgits for $3?

Back

Multiply the amount in dollars by the exchange rate: $3 x 4 = 12 Ringgits.