Home / 8,329.28-12,494.52-5,712.80

Finding the Fourth Proportional to 8,329.28, 12,494.52 and 5,712.80

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Solution

The fourth proportional to 8,329.28, 12,494.52 and 5,712.80 is: 8,569.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,329.28 : 12,494.52 = 5,712.80 : x
  2. Step 2: Convert to fraction form
    8,329.28/12,494.52 = 5,712.80/x
  3. Step 3: Cross multiply
    8,329.28x = 12,494.52 × 5,712.80
  4. Step 4: Simplify right side
    8,329.28x = 71,378,631.38
  5. Step 5: Solve for x
    x = 71,378,631.38/8,329.28
  6. Step 6: Final answer
    x = 8,569.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.