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Finding the Fourth Proportional to 8,557.55, 12,836.10 and 6,481.49

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Solution

The fourth proportional to 8,557.55, 12,836.10 and 6,481.49 is: 9,722.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,557.55 : 12,836.10 = 6,481.49 : x
  2. Step 2: Convert to fraction form
    8,557.55/12,836.10 = 6,481.49/x
  3. Step 3: Cross multiply
    8,557.55x = 12,836.10 × 6,481.49
  4. Step 4: Simplify right side
    8,557.55x = 83,197,067.53
  5. Step 5: Solve for x
    x = 83,197,067.53/8,557.55
  6. Step 6: Final answer
    x = 9,722.07

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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.