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Finding the Fourth Proportional to 9,251.67, 12,852.89 and 9,165.21

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Solution

The fourth proportional to 9,251.67, 12,852.89 and 9,165.21 is: 12,732.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,251.67 : 12,852.89 = 9,165.21 : x
  2. Step 2: Convert to fraction form
    9,251.67/12,852.89 = 9,165.21/x
  3. Step 3: Cross multiply
    9,251.67x = 12,852.89 × 9,165.21
  4. Step 4: Simplify right side
    9,251.67x = 117,799,435.96
  5. Step 5: Solve for x
    x = 117,799,435.96/9,251.67
  6. Step 6: Final answer
    x = 12,732.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.