Answer:
Yes. When you multiply a fraction by 3.14, the results will be a rational answer.
Explanation:
Let's look at some examples. The fractions we are going to be using are
,
, and

We are going to multiply these fractions by 3.14 and prove that when you multiply a fraction by 3.14, your results will be rational.
Ex. 1

Ex. 2

Ex. 3

So, based on these fractions, then we can conclude that when you multiply a fraction by 3.14, then your answer will be rational.