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Finding the Fourth Proportional to 8,600.31, 12,905.25 and 4,651.50

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Solution

The fourth proportional to 8,600.31, 12,905.25 and 4,651.50 is: 6,979.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,600.31 : 12,905.25 = 4,651.50 : x
  2. Step 2: Convert to fraction form
    8,600.31/12,905.25 = 4,651.50/x
  3. Step 3: Cross multiply
    8,600.31x = 12,905.25 × 4,651.50
  4. Step 4: Simplify right side
    8,600.31x = 60,028,770.38
  5. Step 5: Solve for x
    x = 60,028,770.38/8,600.31
  6. Step 6: Final answer
    x = 6,979.84

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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.