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Finding the Fourth Proportional to 8,649.67, 11,937.17 and 4,821.92

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Solution

The fourth proportional to 8,649.67, 11,937.17 and 4,821.92 is: 6,654.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,649.67 : 11,937.17 = 4,821.92 : x
  2. Step 2: Convert to fraction form
    8,649.67/11,937.17 = 4,821.92/x
  3. Step 3: Cross multiply
    8,649.67x = 11,937.17 × 4,821.92
  4. Step 4: Simplify right side
    8,649.67x = 57,560,078.77
  5. Step 5: Solve for x
    x = 57,560,078.77/8,649.67
  6. Step 6: Final answer
    x = 6,654.60

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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.