A proportion is a mathematical comparison between two ratios.
A ratio is a comparison between two numbers.
For instance, the ratio of apples to bananas in a fruit basket is 1 apple to 2 bananas:
This is proportional to the ratio of apples to bananas in another fruit basket, which is 2 apples to 4 bananas:
To write a proportion from this information, we can compare the ratios by makign them equal to each other:
We're given:
$118 per week is one ratio:
$472 per 4 weeks is another ratio:
Now, set them equal to each other to create a proportion:
Therefore, the proportion is [tex]\dfrac{118}{1}=\dfrac{472}{4}[/tex].
