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Finding the Fourth Proportional to 8,691.12, 13,037.94 and 3,496.68

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Solution

The fourth proportional to 8,691.12, 13,037.94 and 3,496.68 is: 5,245.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691.12 : 13,037.94 = 3,496.68 : x
  2. Step 2: Convert to fraction form
    8,691.12/13,037.94 = 3,496.68/x
  3. Step 3: Cross multiply
    8,691.12x = 13,037.94 × 3,496.68
  4. Step 4: Simplify right side
    8,691.12x = 45,589,504.04
  5. Step 5: Solve for x
    x = 45,589,504.04/8,691.12
  6. Step 6: Final answer
    x = 5,245.53

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.