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Finding the Fourth Proportional to 9,191.52, 12,687.12 and 6,836.85

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Solution

The fourth proportional to 9,191.52, 12,687.12 and 6,836.85 is: 9,436.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,191.52 : 12,687.12 = 6,836.85 : x
  2. Step 2: Convert to fraction form
    9,191.52/12,687.12 = 6,836.85/x
  3. Step 3: Cross multiply
    9,191.52x = 12,687.12 × 6,836.85
  4. Step 4: Simplify right side
    9,191.52x = 86,739,936.37
  5. Step 5: Solve for x
    x = 86,739,936.37/9,191.52
  6. Step 6: Final answer
    x = 9,436.95

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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.