Scale Factor of 9 and 4

What is the Scale Factor of 9 and 4? What is the Scale Factor between 9 and 4? More specifically, what is the Scale Factor from a length of 9 to a length of 4? In other words, what (Scale Factor) can you multiply by 9 to get 4 as illustrated below?:

9 × Scale Factor = 4

To solve the equation above, you simply divide both sides by 9 to get the Scale Factor alone on the left side:

(9 × Scale Factor)/9 = 4/9
Scale Factor = 4/9

We could leave the answer like that, but we have also converted the answer to its simplest fraction form and to decimal form:

Fraction answer = 4/9
Decimal answer ≈ 0.444444

You may also be interested to know that we verified that 9 × 4/9 = 4 is true, which means that our answer is correct. Also, note that since 9 is greater than 4, this is a Reduction Scale Factor.

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