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Finding the Fourth Proportional to 3,692.78, 5,538.54 and 1,352.66

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Solution

The fourth proportional to 3,692.78, 5,538.54 and 1,352.66 is: 2,028.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,692.78 : 5,538.54 = 1,352.66 : x
  2. Step 2: Convert to fraction form
    3,692.78/5,538.54 = 1,352.66/x
  3. Step 3: Cross multiply
    3,692.78x = 5,538.54 × 1,352.66
  4. Step 4: Simplify right side
    3,692.78x = 7,491,761.52
  5. Step 5: Solve for x
    x = 7,491,761.52/3,692.78
  6. Step 6: Final answer
    x = 2,028.76

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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.