Home / 3,876.29-5,349.30-2,107.90

Finding the Fourth Proportional to 3,876.29, 5,349.30 and 2,107.90

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Solution

The fourth proportional to 3,876.29, 5,349.30 and 2,107.90 is: 2,908.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.29 : 5,349.30 = 2,107.90 : x
  2. Step 2: Convert to fraction form
    3,876.29/5,349.30 = 2,107.90/x
  3. Step 3: Cross multiply
    3,876.29x = 5,349.30 × 2,107.90
  4. Step 4: Simplify right side
    3,876.29x = 11,275,788.03
  5. Step 5: Solve for x
    x = 11,275,788.03/3,876.29
  6. Step 6: Final answer
    x = 2,908.91

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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.