Home / 3,819.69-5,729.17-1,221.93

Finding the Fourth Proportional to 3,819.69, 5,729.17 and 1,221.93

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Solution

The fourth proportional to 3,819.69, 5,729.17 and 1,221.93 is: 1,832.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,819.69 : 5,729.17 = 1,221.93 : x
  2. Step 2: Convert to fraction form
    3,819.69/5,729.17 = 1,221.93/x
  3. Step 3: Cross multiply
    3,819.69x = 5,729.17 × 1,221.93
  4. Step 4: Simplify right side
    3,819.69x = 7,000,644.70
  5. Step 5: Solve for x
    x = 7,000,644.70/3,819.69
  6. Step 6: Final answer
    x = 1,832.78

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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.