Home / 5,149.11-7,715.55-3,981.96

Finding the Fourth Proportional to 5,149.11, 7,715.55 and 3,981.96

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Solution

The fourth proportional to 5,149.11, 7,715.55 and 3,981.96 is: 5,966.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.11 : 7,715.55 = 3,981.96 : x
  2. Step 2: Convert to fraction form
    5,149.11/7,715.55 = 3,981.96/x
  3. Step 3: Cross multiply
    5,149.11x = 7,715.55 × 3,981.96
  4. Step 4: Simplify right side
    5,149.11x = 30,723,011.48
  5. Step 5: Solve for x
    x = 30,723,011.48/5,149.11
  6. Step 6: Final answer
    x = 5,966.66

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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.