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Finding the Fourth Proportional to 8,377.92, 12,540.80 and 6,534.40

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Solution

The fourth proportional to 8,377.92, 12,540.80 and 6,534.40 is: 9,781.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,377.92 : 12,540.80 = 6,534.40 : x
  2. Step 2: Convert to fraction form
    8,377.92/12,540.80 = 6,534.40/x
  3. Step 3: Cross multiply
    8,377.92x = 12,540.80 × 6,534.40
  4. Step 4: Simplify right side
    8,377.92x = 81,946,603.52
  5. Step 5: Solve for x
    x = 81,946,603.52/8,377.92
  6. Step 6: Final answer
    x = 9,781.26

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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.