Home / 9,691.12-13,371.60-6,158.80

Finding the Fourth Proportional to 9,691.12, 13,371.60 and 6,158.80

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Solution

The fourth proportional to 9,691.12, 13,371.60 and 6,158.80 is: 8,497.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,691.12 : 13,371.60 = 6,158.80 : x
  2. Step 2: Convert to fraction form
    9,691.12/13,371.60 = 6,158.80/x
  3. Step 3: Cross multiply
    9,691.12x = 13,371.60 × 6,158.80
  4. Step 4: Simplify right side
    9,691.12x = 82,353,010.08
  5. Step 5: Solve for x
    x = 82,353,010.08/9,691.12
  6. Step 6: Final answer
    x = 8,497.78

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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.