Home / 3,938.60-5,439.46-2,992.52

Finding the Fourth Proportional to 3,938.60, 5,439.46 and 2,992.52

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Solution

The fourth proportional to 3,938.60, 5,439.46 and 2,992.52 is: 4,132.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.60 : 5,439.46 = 2,992.52 : x
  2. Step 2: Convert to fraction form
    3,938.60/5,439.46 = 2,992.52/x
  3. Step 3: Cross multiply
    3,938.60x = 5,439.46 × 2,992.52
  4. Step 4: Simplify right side
    3,938.60x = 16,277,692.84
  5. Step 5: Solve for x
    x = 16,277,692.84/3,938.60
  6. Step 6: Final answer
    x = 4,132.86

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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.