Home / 3,981.28-5,494.22-2,212.96

Finding the Fourth Proportional to 3,981.28, 5,494.22 and 2,212.96

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Solution

The fourth proportional to 3,981.28, 5,494.22 and 2,212.96 is: 3,053.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.28 : 5,494.22 = 2,212.96 : x
  2. Step 2: Convert to fraction form
    3,981.28/5,494.22 = 2,212.96/x
  3. Step 3: Cross multiply
    3,981.28x = 5,494.22 × 2,212.96
  4. Step 4: Simplify right side
    3,981.28x = 12,158,489.09
  5. Step 5: Solve for x
    x = 12,158,489.09/3,981.28
  6. Step 6: Final answer
    x = 3,053.91

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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.