Home / 8,147.61-12,217.28-3,981.38

Finding the Fourth Proportional to 8,147.61, 12,217.28 and 3,981.38

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Solution

The fourth proportional to 8,147.61, 12,217.28 and 3,981.38 is: 5,970.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,147.61 : 12,217.28 = 3,981.38 : x
  2. Step 2: Convert to fraction form
    8,147.61/12,217.28 = 3,981.38/x
  3. Step 3: Cross multiply
    8,147.61x = 12,217.28 × 3,981.38
  4. Step 4: Simplify right side
    8,147.61x = 48,641,553.25
  5. Step 5: Solve for x
    x = 48,641,553.25/8,147.61
  6. Step 6: Final answer
    x = 5,970.04

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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.