Home / 8,610.39-12,915.13-2,766.55

Finding the Fourth Proportional to 8,610.39, 12,915.13 and 2,766.55

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Solution

The fourth proportional to 8,610.39, 12,915.13 and 2,766.55 is: 4,149.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,610.39 : 12,915.13 = 2,766.55 : x
  2. Step 2: Convert to fraction form
    8,610.39/12,915.13 = 2,766.55/x
  3. Step 3: Cross multiply
    8,610.39x = 12,915.13 × 2,766.55
  4. Step 4: Simplify right side
    8,610.39x = 35,730,352.90
  5. Step 5: Solve for x
    x = 35,730,352.90/8,610.39
  6. Step 6: Final answer
    x = 4,149.68

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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.