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Finding the Fourth Proportional to 2,687.97, 3,709.95 and 1,692.59

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Solution

The fourth proportional to 2,687.97, 3,709.95 and 1,692.59 is: 2,336.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.97 : 3,709.95 = 1,692.59 : x
  2. Step 2: Convert to fraction form
    2,687.97/3,709.95 = 1,692.59/x
  3. Step 3: Cross multiply
    2,687.97x = 3,709.95 × 1,692.59
  4. Step 4: Simplify right side
    2,687.97x = 6,279,405.72
  5. Step 5: Solve for x
    x = 6,279,405.72/2,687.97
  6. Step 6: Final answer
    x = 2,336.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.