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Finding the Fourth Proportional to 8,487.38, 12,732.90 and 4,329.65

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Solution

The fourth proportional to 8,487.38, 12,732.90 and 4,329.65 is: 6,495.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,487.38 : 12,732.90 = 4,329.65 : x
  2. Step 2: Convert to fraction form
    8,487.38/12,732.90 = 4,329.65/x
  3. Step 3: Cross multiply
    8,487.38x = 12,732.90 × 4,329.65
  4. Step 4: Simplify right side
    8,487.38x = 55,129,016.08
  5. Step 5: Solve for x
    x = 55,129,016.08/8,487.38
  6. Step 6: Final answer
    x = 6,495.41

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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.