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Finding the Fourth Proportional to 8,891.97, 12,257.19 and 6,650.43

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Solution

The fourth proportional to 8,891.97, 12,257.19 and 6,650.43 is: 9,167.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,891.97 : 12,257.19 = 6,650.43 : x
  2. Step 2: Convert to fraction form
    8,891.97/12,257.19 = 6,650.43/x
  3. Step 3: Cross multiply
    8,891.97x = 12,257.19 × 6,650.43
  4. Step 4: Simplify right side
    8,891.97x = 81,515,584.09
  5. Step 5: Solve for x
    x = 81,515,584.09/8,891.97
  6. Step 6: Final answer
    x = 9,167.33

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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.