Home / 3,679.05-5,517.79-1,213.29

Finding the Fourth Proportional to 3,679.05, 5,517.79 and 1,213.29

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Solution

The fourth proportional to 3,679.05, 5,517.79 and 1,213.29 is: 1,819.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.05 : 5,517.79 = 1,213.29 : x
  2. Step 2: Convert to fraction form
    3,679.05/5,517.79 = 1,213.29/x
  3. Step 3: Cross multiply
    3,679.05x = 5,517.79 × 1,213.29
  4. Step 4: Simplify right side
    3,679.05x = 6,694,683.22
  5. Step 5: Solve for x
    x = 6,694,683.22/3,679.05
  6. Step 6: Final answer
    x = 1,819.68

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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.