Home / 2,871.04-3,961.92-1,692.20

Finding the Fourth Proportional to 2,871.04, 3,961.92 and 1,692.20

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Solution

The fourth proportional to 2,871.04, 3,961.92 and 1,692.20 is: 2,335.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,871.04 : 3,961.92 = 1,692.20 : x
  2. Step 2: Convert to fraction form
    2,871.04/3,961.92 = 1,692.20/x
  3. Step 3: Cross multiply
    2,871.04x = 3,961.92 × 1,692.20
  4. Step 4: Simplify right side
    2,871.04x = 6,704,361.02
  5. Step 5: Solve for x
    x = 6,704,361.02/2,871.04
  6. Step 6: Final answer
    x = 2,335.17

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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.