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Finding the Fourth Proportional to 3,819.67, 5,720.29 and 3,381.41

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Solution

The fourth proportional to 3,819.67, 5,720.29 and 3,381.41 is: 5,063.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,819.67 : 5,720.29 = 3,381.41 : x
  2. Step 2: Convert to fraction form
    3,819.67/5,720.29 = 3,381.41/x
  3. Step 3: Cross multiply
    3,819.67x = 5,720.29 × 3,381.41
  4. Step 4: Simplify right side
    3,819.67x = 19,342,651.66
  5. Step 5: Solve for x
    x = 19,342,651.66/3,819.67
  6. Step 6: Final answer
    x = 5,063.96

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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.