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Finding the Fourth Proportional to 8,149.20, 12,248.10 and 8,003.40

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Solution

The fourth proportional to 8,149.20, 12,248.10 and 8,003.40 is: 12,028.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,149.20 : 12,248.10 = 8,003.40 : x
  2. Step 2: Convert to fraction form
    8,149.20/12,248.10 = 8,003.40/x
  3. Step 3: Cross multiply
    8,149.20x = 12,248.10 × 8,003.40
  4. Step 4: Simplify right side
    8,149.20x = 98,026,443.54
  5. Step 5: Solve for x
    x = 98,026,443.54/8,149.20
  6. Step 6: Final answer
    x = 12,028.97

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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.