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Finding the Fourth Proportional to 9,076.75, 12,487.03 and 8,687.95

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Solution

The fourth proportional to 9,076.75, 12,487.03 and 8,687.95 is: 11,952.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,076.75 : 12,487.03 = 8,687.95 : x
  2. Step 2: Convert to fraction form
    9,076.75/12,487.03 = 8,687.95/x
  3. Step 3: Cross multiply
    9,076.75x = 12,487.03 × 8,687.95
  4. Step 4: Simplify right side
    9,076.75x = 108,486,692.29
  5. Step 5: Solve for x
    x = 108,486,692.29/9,076.75
  6. Step 6: Final answer
    x = 11,952.15

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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.