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Finding the Fourth Proportional to 8,607.12, 12,910.05 and 4,897.71

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Solution

The fourth proportional to 8,607.12, 12,910.05 and 4,897.71 is: 7,346.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.12 : 12,910.05 = 4,897.71 : x
  2. Step 2: Convert to fraction form
    8,607.12/12,910.05 = 4,897.71/x
  3. Step 3: Cross multiply
    8,607.12x = 12,910.05 × 4,897.71
  4. Step 4: Simplify right side
    8,607.12x = 63,229,680.99
  5. Step 5: Solve for x
    x = 63,229,680.99/8,607.12
  6. Step 6: Final answer
    x = 7,346.21

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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.