Home / 3,876.86-5,350.09-2,108.48

Finding the Fourth Proportional to 3,876.86, 5,350.09 and 2,108.48

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Solution

The fourth proportional to 3,876.86, 5,350.09 and 2,108.48 is: 2,909.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.86 : 5,350.09 = 2,108.48 : x
  2. Step 2: Convert to fraction form
    3,876.86/5,350.09 = 2,108.48/x
  3. Step 3: Cross multiply
    3,876.86x = 5,350.09 × 2,108.48
  4. Step 4: Simplify right side
    3,876.86x = 11,280,549.66
  5. Step 5: Solve for x
    x = 11,280,549.66/3,876.86
  6. Step 6: Final answer
    x = 2,909.71

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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.