How do you convert 15/4 into a mixed number?

To convert the improper fraction 15/4 into a mixed number, follow these steps:

1. Divide the numerator (15) by the denominator (4). When you do this, you find that 15 divided by 4 equals 3, with a remainder of 3. This means that there are 3 whole parts in the fraction.
2. The remainder (3) becomes the numerator of the fractional part, while the denominator remains the same (4).
3. Therefore, 15/4 can be expressed as the mixed number 3 3/4.

So, the mixed number representation of 15/4 is 3 3/4.