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Finding the Fourth Proportional to 2,692.60, 4,041.90 and 1,393.72

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Solution

The fourth proportional to 2,692.60, 4,041.90 and 1,393.72 is: 2,092.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,692.60 : 4,041.90 = 1,393.72 : x
  2. Step 2: Convert to fraction form
    2,692.60/4,041.90 = 1,393.72/x
  3. Step 3: Cross multiply
    2,692.60x = 4,041.90 × 1,393.72
  4. Step 4: Simplify right side
    2,692.60x = 5,633,276.87
  5. Step 5: Solve for x
    x = 5,633,276.87/2,692.60
  6. Step 6: Final answer
    x = 2,092.13

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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.