13,7/4=9t/3,6

To solve the proportion \( \frac{13.7}{4} = \frac{9t}{3.6} \), we can use cross-multiplication: 1. Multiply 13.7 by 3.6. 2. Multiply 4 by 9t. This gives the equation: \[ 13.7 \times 3.6 = 4 \times 9t \] Calculate the values: \[ 49.32 = 36t \] Now, solve for \( t \): \[ t = \frac{49.32}{36} \] \[ t \approx 1.37 \] So, \( t \approx 1.37 \).