Home / 2,871.30-3,962.91-1,692.30

Finding the Fourth Proportional to 2,871.30, 3,962.91 and 1,692.30

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Solution

The fourth proportional to 2,871.30, 3,962.91 and 1,692.30 is: 2,335.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,871.30 : 3,962.91 = 1,692.30 : x
  2. Step 2: Convert to fraction form
    2,871.30/3,962.91 = 1,692.30/x
  3. Step 3: Cross multiply
    2,871.30x = 3,962.91 × 1,692.30
  4. Step 4: Simplify right side
    2,871.30x = 6,706,432.59
  5. Step 5: Solve for x
    x = 6,706,432.59/2,871.30
  6. Step 6: Final answer
    x = 2,335.68

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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.