Home / 3,876.24-5,349.28-2,107.84

Finding the Fourth Proportional to 3,876.24, 5,349.28 and 2,107.84

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Solution

The fourth proportional to 3,876.24, 5,349.28 and 2,107.84 is: 2,908.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.24 : 5,349.28 = 2,107.84 : x
  2. Step 2: Convert to fraction form
    3,876.24/5,349.28 = 2,107.84/x
  3. Step 3: Cross multiply
    3,876.24x = 5,349.28 × 2,107.84
  4. Step 4: Simplify right side
    3,876.24x = 11,275,426.36
  5. Step 5: Solve for x
    x = 11,275,426.36/3,876.24
  6. Step 6: Final answer
    x = 2,908.86

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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.