Home / 3,936.79-5,432.43-2,167.95

Finding the Fourth Proportional to 3,936.79, 5,432.43 and 2,167.95

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Solution

The fourth proportional to 3,936.79, 5,432.43 and 2,167.95 is: 2,991.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.79 : 5,432.43 = 2,167.95 : x
  2. Step 2: Convert to fraction form
    3,936.79/5,432.43 = 2,167.95/x
  3. Step 3: Cross multiply
    3,936.79x = 5,432.43 × 2,167.95
  4. Step 4: Simplify right side
    3,936.79x = 11,777,236.62
  5. Step 5: Solve for x
    x = 11,777,236.62/3,936.79
  6. Step 6: Final answer
    x = 2,991.58

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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.