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Finding the Fourth Proportional to 8,627.92, 12,929.58 and 6,864.99

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Solution

The fourth proportional to 8,627.92, 12,929.58 and 6,864.99 is: 10,287.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,627.92 : 12,929.58 = 6,864.99 : x
  2. Step 2: Convert to fraction form
    8,627.92/12,929.58 = 6,864.99/x
  3. Step 3: Cross multiply
    8,627.92x = 12,929.58 × 6,864.99
  4. Step 4: Simplify right side
    8,627.92x = 88,761,403.08
  5. Step 5: Solve for x
    x = 88,761,403.08/8,627.92
  6. Step 6: Final answer
    x = 10,287.69

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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.