Home / 3,876.15-5,349.18-2,107.85

Finding the Fourth Proportional to 3,876.15, 5,349.18 and 2,107.85

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Solution

The fourth proportional to 3,876.15, 5,349.18 and 2,107.85 is: 2,908.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.15 : 5,349.18 = 2,107.85 : x
  2. Step 2: Convert to fraction form
    3,876.15/5,349.18 = 2,107.85/x
  3. Step 3: Cross multiply
    3,876.15x = 5,349.18 × 2,107.85
  4. Step 4: Simplify right side
    3,876.15x = 11,275,242.32
  5. Step 5: Solve for x
    x = 11,275,242.32/3,876.15
  6. Step 6: Final answer
    x = 2,908.88

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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.