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Finding the Fourth Proportional to 8,614.62, 12,910.92 and 7,499.46

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Solution

The fourth proportional to 8,614.62, 12,910.92 and 7,499.46 is: 11,239.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,614.62 : 12,910.92 = 7,499.46 : x
  2. Step 2: Convert to fraction form
    8,614.62/12,910.92 = 7,499.46/x
  3. Step 3: Cross multiply
    8,614.62x = 12,910.92 × 7,499.46
  4. Step 4: Simplify right side
    8,614.62x = 96,824,928.10
  5. Step 5: Solve for x
    x = 96,824,928.10/8,614.62
  6. Step 6: Final answer
    x = 11,239.61

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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.