Home / 3,981.40-5,496.86-2,724.55

Finding the Fourth Proportional to 3,981.40, 5,496.86 and 2,724.55

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Solution

The fourth proportional to 3,981.40, 5,496.86 and 2,724.55 is: 3,761.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.40 : 5,496.86 = 2,724.55 : x
  2. Step 2: Convert to fraction form
    3,981.40/5,496.86 = 2,724.55/x
  3. Step 3: Cross multiply
    3,981.40x = 5,496.86 × 2,724.55
  4. Step 4: Simplify right side
    3,981.40x = 14,976,469.91
  5. Step 5: Solve for x
    x = 14,976,469.91/3,981.40
  6. Step 6: Final answer
    x = 3,761.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.