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Finding the Fourth Proportional to 8,654.30, 11,942.76 and 4,877.47

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Solution

The fourth proportional to 8,654.30, 11,942.76 and 4,877.47 is: 6,730.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,654.30 : 11,942.76 = 4,877.47 : x
  2. Step 2: Convert to fraction form
    8,654.30/11,942.76 = 4,877.47/x
  3. Step 3: Cross multiply
    8,654.30x = 11,942.76 × 4,877.47
  4. Step 4: Simplify right side
    8,654.30x = 58,250,453.62
  5. Step 5: Solve for x
    x = 58,250,453.62/8,654.30
  6. Step 6: Final answer
    x = 6,730.81

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1.5x scale

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.