Home / 3,619.39-5,431.68-1,540.85

Finding the Fourth Proportional to 3,619.39, 5,431.68 and 1,540.85

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Solution

The fourth proportional to 3,619.39, 5,431.68 and 1,540.85 is: 2,312.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.39 : 5,431.68 = 1,540.85 : x
  2. Step 2: Convert to fraction form
    3,619.39/5,431.68 = 1,540.85/x
  3. Step 3: Cross multiply
    3,619.39x = 5,431.68 × 1,540.85
  4. Step 4: Simplify right side
    3,619.39x = 8,369,391.56
  5. Step 5: Solve for x
    x = 8,369,391.56/3,619.39
  6. Step 6: Final answer
    x = 2,312.38

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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.