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Finding the Fourth Proportional to 8,466.92, 12,702.20 and 3,272.80

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Solution

The fourth proportional to 8,466.92, 12,702.20 and 3,272.80 is: 4,909.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,466.92 : 12,702.20 = 3,272.80 : x
  2. Step 2: Convert to fraction form
    8,466.92/12,702.20 = 3,272.80/x
  3. Step 3: Cross multiply
    8,466.92x = 12,702.20 × 3,272.80
  4. Step 4: Simplify right side
    8,466.92x = 41,571,760.16
  5. Step 5: Solve for x
    x = 41,571,760.16/8,466.92
  6. Step 6: Final answer
    x = 4,909.90

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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.