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Finding the Fourth Proportional to 8,759.55, 13,129.55 and 3,493.18

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Solution

The fourth proportional to 8,759.55, 13,129.55 and 3,493.18 is: 5,235.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,759.55 : 13,129.55 = 3,493.18 : x
  2. Step 2: Convert to fraction form
    8,759.55/13,129.55 = 3,493.18/x
  3. Step 3: Cross multiply
    8,759.55x = 13,129.55 × 3,493.18
  4. Step 4: Simplify right side
    8,759.55x = 45,863,857.38
  5. Step 5: Solve for x
    x = 45,863,857.38/8,759.55
  6. Step 6: Final answer
    x = 5,235.87

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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.