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Finding the Fourth Proportional to 8,362.77, 12,545.45 and 2,815.68

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Solution

The fourth proportional to 8,362.77, 12,545.45 and 2,815.68 is: 4,223.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,362.77 : 12,545.45 = 2,815.68 : x
  2. Step 2: Convert to fraction form
    8,362.77/12,545.45 = 2,815.68/x
  3. Step 3: Cross multiply
    8,362.77x = 12,545.45 × 2,815.68
  4. Step 4: Simplify right side
    8,362.77x = 35,323,958.58
  5. Step 5: Solve for x
    x = 35,323,958.58/8,362.77
  6. Step 6: Final answer
    x = 4,223.95

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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.