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Finding the Fourth Proportional to 8,545.76, 12,800.28 and 4,641.92

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Solution

The fourth proportional to 8,545.76, 12,800.28 and 4,641.92 is: 6,952.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,545.76 : 12,800.28 = 4,641.92 : x
  2. Step 2: Convert to fraction form
    8,545.76/12,800.28 = 4,641.92/x
  3. Step 3: Cross multiply
    8,545.76x = 12,800.28 × 4,641.92
  4. Step 4: Simplify right side
    8,545.76x = 59,417,875.74
  5. Step 5: Solve for x
    x = 59,417,875.74/8,545.76
  6. Step 6: Final answer
    x = 6,952.91

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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.