Home / 3,910.50-5,866.38-2,685.78

Finding the Fourth Proportional to 3,910.50, 5,866.38 and 2,685.78

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Solution

The fourth proportional to 3,910.50, 5,866.38 and 2,685.78 is: 4,029.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.50 : 5,866.38 = 2,685.78 : x
  2. Step 2: Convert to fraction form
    3,910.50/5,866.38 = 2,685.78/x
  3. Step 3: Cross multiply
    3,910.50x = 5,866.38 × 2,685.78
  4. Step 4: Simplify right side
    3,910.50x = 15,755,806.08
  5. Step 5: Solve for x
    x = 15,755,806.08/3,910.50
  6. Step 6: Final answer
    x = 4,029.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.