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Finding the Fourth Proportional to 8,891.62, 12,261.22 and 7,636.82

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Solution

The fourth proportional to 8,891.62, 12,261.22 and 7,636.82 is: 10,530.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,891.62 : 12,261.22 = 7,636.82 : x
  2. Step 2: Convert to fraction form
    8,891.62/12,261.22 = 7,636.82/x
  3. Step 3: Cross multiply
    8,891.62x = 12,261.22 × 7,636.82
  4. Step 4: Simplify right side
    8,891.62x = 93,636,691.94
  5. Step 5: Solve for x
    x = 93,636,691.94/8,891.62
  6. Step 6: Final answer
    x = 10,530.90

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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.