1. The problem is to convert the phrase "Three whole three upon 4" into a mathematical fraction or mixed number. 2. "Three whole" means 3 as a whole number. 3. "Three upon 4" means the fraction $\frac{3}{4}$. 4. Combining these, the mixed number is $3 \frac{3}{4}$. 5. To express this as an improper fraction, convert the mixed number: $$3 \frac{3}{4} = \frac{3 \times 4 + 3}{4} = \frac{12 + 3}{4} = \frac{15}{4}$$. 6. So, "Three whole three upon 4" equals the mixed number $3 \frac{3}{4}$ or the improper fraction $\frac{15}{4}$.