Home / 7,639.28-10,542.20-4,282.12

Finding the Fourth Proportional to 7,639.28, 10,542.20 and 4,282.12

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Solution

The fourth proportional to 7,639.28, 10,542.20 and 4,282.12 is: 5,909.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,639.28 : 10,542.20 = 4,282.12 : x
  2. Step 2: Convert to fraction form
    7,639.28/10,542.20 = 4,282.12/x
  3. Step 3: Cross multiply
    7,639.28x = 10,542.20 × 4,282.12
  4. Step 4: Simplify right side
    7,639.28x = 45,142,965.46
  5. Step 5: Solve for x
    x = 45,142,965.46/7,639.28
  6. Step 6: Final answer
    x = 5,909.32

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1.5x scale

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.