To express the problem as an inequality, we can let \( x \) represent the number in question. The phrase "three-fourths of a number" translates to \( \frac{3}{4}x \).
According to the problem, the sum of 11 and three-fourths of the number is less than 112. We can write this as:
\[ \frac{3}{4}x + 11 < 112 \]
So the inequality that could be used to solve this problem is:
\[ \frac{3}{4}x + 11 < 112 \]