Home / 3,981.17-5,493.98-2,212.75

Finding the Fourth Proportional to 3,981.17, 5,493.98 and 2,212.75

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Solution

The fourth proportional to 3,981.17, 5,493.98 and 2,212.75 is: 3,053.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.17 : 5,493.98 = 2,212.75 : x
  2. Step 2: Convert to fraction form
    3,981.17/5,493.98 = 2,212.75/x
  3. Step 3: Cross multiply
    3,981.17x = 5,493.98 × 2,212.75
  4. Step 4: Simplify right side
    3,981.17x = 12,156,765.71
  5. Step 5: Solve for x
    x = 12,156,765.71/3,981.17
  6. Step 6: Final answer
    x = 3,053.57

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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.