How do you write 5 is to 1 as 20 is to 4 as a proportion in fractional notation?

To write "5 is to 1 as 20 is to 4" as a proportion in fractional notation, we can express it as 5/1 = 20/4.

Simplifying both fractions, we have 5 = 5.

To write "5 is to 1 as 20 is to 4" as a proportion in fractional notation, you would set up the ratio of the first set of numbers to the second set of numbers and express it as a fraction.

The ratio of 5 to 1 is written as 5/1.
The ratio of 20 to 4 is written as 20/4.

To express this ratio as a proportion, you can equate the two ratios:

5/1 = 20/4

Simplifying the fraction on the right-hand side of the equation:

5/1 = 5/1

Therefore, the proportion in fractional notation is 5/1 = 20/4.