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Finding the Fourth Proportional to 8,693.92, 13,040.82 and 3,499.72

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Solution

The fourth proportional to 8,693.92, 13,040.82 and 3,499.72 is: 5,249.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,693.92 : 13,040.82 = 3,499.72 : x
  2. Step 2: Convert to fraction form
    8,693.92/13,040.82 = 3,499.72/x
  3. Step 3: Cross multiply
    8,693.92x = 13,040.82 × 3,499.72
  4. Step 4: Simplify right side
    8,693.92x = 45,639,218.57
  5. Step 5: Solve for x
    x = 45,639,218.57/8,693.92
  6. Step 6: Final answer
    x = 5,249.56

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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.