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Finding the Fourth Proportional to 2,692.80, 4,031.10 and 2,532.60

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Solution

The fourth proportional to 2,692.80, 4,031.10 and 2,532.60 is: 3,791.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,692.80 : 4,031.10 = 2,532.60 : x
  2. Step 2: Convert to fraction form
    2,692.80/4,031.10 = 2,532.60/x
  3. Step 3: Cross multiply
    2,692.80x = 4,031.10 × 2,532.60
  4. Step 4: Simplify right side
    2,692.80x = 10,209,163.86
  5. Step 5: Solve for x
    x = 10,209,163.86/2,692.80
  6. Step 6: Final answer
    x = 3,791.28

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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.