Home / 2,692.38-3,714.42-1,985.92

Finding the Fourth Proportional to 2,692.38, 3,714.42 and 1,985.92

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Solution

The fourth proportional to 2,692.38, 3,714.42 and 1,985.92 is: 2,739.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,692.38 : 3,714.42 = 1,985.92 : x
  2. Step 2: Convert to fraction form
    2,692.38/3,714.42 = 1,985.92/x
  3. Step 3: Cross multiply
    2,692.38x = 3,714.42 × 1,985.92
  4. Step 4: Simplify right side
    2,692.38x = 7,376,540.97
  5. Step 5: Solve for x
    x = 7,376,540.97/2,692.38
  6. Step 6: Final answer
    x = 2,739.78

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1.5x scale

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.