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Finding the Fourth Proportional to 8,962.13, 12,335.09 and 7,892.91

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Solution

The fourth proportional to 8,962.13, 12,335.09 and 7,892.91 is: 10,863.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,962.13 : 12,335.09 = 7,892.91 : x
  2. Step 2: Convert to fraction form
    8,962.13/12,335.09 = 7,892.91/x
  3. Step 3: Cross multiply
    8,962.13x = 12,335.09 × 7,892.91
  4. Step 4: Simplify right side
    8,962.13x = 97,359,755.21
  5. Step 5: Solve for x
    x = 97,359,755.21/8,962.13
  6. Step 6: Final answer
    x = 10,863.46

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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.