Home / 5.28-7.29-3.13

Finding the Fourth Proportional to 5.28, 7.29 and 3.13

Calculator

Solution

The fourth proportional to 5.28, 7.29 and 3.13 is: 4.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5.28 : 7.29 = 3.13 : x
  2. Step 2: Convert to fraction form
    5.28/7.29 = 3.13/x
  3. Step 3: Cross multiply
    5.28x = 7.29 × 3.13
  4. Step 4: Simplify right side
    5.28x = 22.77
  5. Step 5: Solve for x
    x = 22.77/5.28
  6. Step 6: Final answer
    x = 4.31

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.