Home / 7,874.62-11,819.22-3,981.76

Finding the Fourth Proportional to 7,874.62, 11,819.22 and 3,981.76

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Solution

The fourth proportional to 7,874.62, 11,819.22 and 3,981.76 is: 5,976.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,874.62 : 11,819.22 = 3,981.76 : x
  2. Step 2: Convert to fraction form
    7,874.62/11,819.22 = 3,981.76/x
  3. Step 3: Cross multiply
    7,874.62x = 11,819.22 × 3,981.76
  4. Step 4: Simplify right side
    7,874.62x = 47,061,297.43
  5. Step 5: Solve for x
    x = 47,061,297.43/7,874.62
  6. Step 6: Final answer
    x = 5,976.33

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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.