Home / 3,892.12-5,836.78-1,426.28

Finding the Fourth Proportional to 3,892.12, 5,836.78 and 1,426.28

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Solution

The fourth proportional to 3,892.12, 5,836.78 and 1,426.28 is: 2,138.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,892.12 : 5,836.78 = 1,426.28 : x
  2. Step 2: Convert to fraction form
    3,892.12/5,836.78 = 1,426.28/x
  3. Step 3: Cross multiply
    3,892.12x = 5,836.78 × 1,426.28
  4. Step 4: Simplify right side
    3,892.12x = 8,324,882.58
  5. Step 5: Solve for x
    x = 8,324,882.58/3,892.12
  6. Step 6: Final answer
    x = 2,138.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.