Home / 3,876.38-5,349.26-2,107.96

Finding the Fourth Proportional to 3,876.38, 5,349.26 and 2,107.96

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Solution

The fourth proportional to 3,876.38, 5,349.26 and 2,107.96 is: 2,908.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.38 : 5,349.26 = 2,107.96 : x
  2. Step 2: Convert to fraction form
    3,876.38/5,349.26 = 2,107.96/x
  3. Step 3: Cross multiply
    3,876.38x = 5,349.26 × 2,107.96
  4. Step 4: Simplify right side
    3,876.38x = 11,276,026.11
  5. Step 5: Solve for x
    x = 11,276,026.11/3,876.38
  6. Step 6: Final answer
    x = 2,908.91

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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.