Home / 3,908.38-5,394.72-2,729.84

Finding the Fourth Proportional to 3,908.38, 5,394.72 and 2,729.84

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Solution

The fourth proportional to 3,908.38, 5,394.72 and 2,729.84 is: 3,767.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.38 : 5,394.72 = 2,729.84 : x
  2. Step 2: Convert to fraction form
    3,908.38/5,394.72 = 2,729.84/x
  3. Step 3: Cross multiply
    3,908.38x = 5,394.72 × 2,729.84
  4. Step 4: Simplify right side
    3,908.38x = 14,726,722.44
  5. Step 5: Solve for x
    x = 14,726,722.44/3,908.38
  6. Step 6: Final answer
    x = 3,767.99

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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.