proportion word problems

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal. For example, if a/b = c/d, then a, b, c, and d are in proportion.

Front

How do you solve a proportion word problem?

Back

To solve a proportion word problem, identify the ratios involved, set up a proportion equation, and solve for the unknown variable.

Front

What is the exchange rate?

Back

The exchange rate is the value of one currency for the purpose of conversion to another. It indicates how much of one currency you can exchange for another.

Front

If the exchange rate is 1 Jamaican dollar = 0.5 US dollars, how many Jamaican dollars can you get for $28?

Back

You can get $56 Jamaican dollars for $28.

Front

What does scale mean in a map context?

Back

Scale refers to the relationship between the distance on the map and the actual distance on the ground. For example, a scale of 1cm = 8km means 1cm on the map represents 8km in reality.

Front

If two cities are 24cm apart on a map with a scale of 1cm = 8km, what is the actual distance?

Back

The actual distance is 192 km.

Front

What is the formula for finding the new dimensions of a shape when enlarged?

Back

To find the new dimensions, use the ratio of the new size to the original size. For example, if the width is enlarged from 3 in. to 15 in., the height can be found using the same ratio.

Front

If a painting's width is enlarged from 3 in. to 15 in., what is the new height if the original height was 4 in.?

Back

The new height is 20 in.

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together. It is often expressed as a quantity per one unit, such as miles per hour.

Front

If a 12-ounce bottle of shampoo lasts 16 weeks, how long will an 18-ounce bottle last?

Back

An 18-ounce bottle will last 24 weeks.