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Finding the Fourth Proportional to 8,600.80, 12,901.22 and 5,678.42

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Solution

The fourth proportional to 8,600.80, 12,901.22 and 5,678.42 is: 8,517.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,600.80 : 12,901.22 = 5,678.42 : x
  2. Step 2: Convert to fraction form
    8,600.80/12,901.22 = 5,678.42/x
  3. Step 3: Cross multiply
    8,600.80x = 12,901.22 × 5,678.42
  4. Step 4: Simplify right side
    8,600.80x = 73,258,545.67
  5. Step 5: Solve for x
    x = 73,258,545.67/8,600.80
  6. Step 6: Final answer
    x = 8,517.64

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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.