What is the solution to the proportion a/b = c/d?

ad = bc

Step-by-step explanation: A proportion is an equation which states that two ratios are equal. For example, is an example of a proportion.

In the given proportion, a and d are called extremes and b and c are called means.

The first property that I will be talking about states that the product of the extremes equals the product of the means.

This idea is called the means-extremes property.

So if , we know that a times d equals b times c by the means-extremes property or ad = bc.

So the solution to the proportion is ad = bc.

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x