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Finding the Fourth Proportional to 8,767.52, 12,100.22 and 4,939.28

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Solution

The fourth proportional to 8,767.52, 12,100.22 and 4,939.28 is: 6,816.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,767.52 : 12,100.22 = 4,939.28 : x
  2. Step 2: Convert to fraction form
    8,767.52/12,100.22 = 4,939.28/x
  3. Step 3: Cross multiply
    8,767.52x = 12,100.22 × 4,939.28
  4. Step 4: Simplify right side
    8,767.52x = 59,766,374.64
  5. Step 5: Solve for x
    x = 59,766,374.64/8,767.52
  6. Step 6: Final answer
    x = 6,816.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.