Home / 3,876.23-5,349.13-2,107.88

Finding the Fourth Proportional to 3,876.23, 5,349.13 and 2,107.88

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Solution

The fourth proportional to 3,876.23, 5,349.13 and 2,107.88 is: 2,908.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.23 : 5,349.13 = 2,107.88 : x
  2. Step 2: Convert to fraction form
    3,876.23/5,349.13 = 2,107.88/x
  3. Step 3: Cross multiply
    3,876.23x = 5,349.13 × 2,107.88
  4. Step 4: Simplify right side
    3,876.23x = 11,275,292.13
  5. Step 5: Solve for x
    x = 11,275,292.13/3,876.23
  6. Step 6: Final answer
    x = 2,908.83

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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.