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Finding the Fourth Proportional to 8,884.62, 12,260.79 and 4,905.90

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Solution

The fourth proportional to 8,884.62, 12,260.79 and 4,905.90 is: 6,770.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,884.62 : 12,260.79 = 4,905.90 : x
  2. Step 2: Convert to fraction form
    8,884.62/12,260.79 = 4,905.90/x
  3. Step 3: Cross multiply
    8,884.62x = 12,260.79 × 4,905.90
  4. Step 4: Simplify right side
    8,884.62x = 60,150,209.66
  5. Step 5: Solve for x
    x = 60,150,209.66/8,884.62
  6. Step 6: Final answer
    x = 6,770.15

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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.