Home / 3,921.85-5,910.97-3,380.57

Finding the Fourth Proportional to 3,921.85, 5,910.97 and 3,380.57

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Solution

The fourth proportional to 3,921.85, 5,910.97 and 3,380.57 is: 5,095.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.85 : 5,910.97 = 3,380.57 : x
  2. Step 2: Convert to fraction form
    3,921.85/5,910.97 = 3,380.57/x
  3. Step 3: Cross multiply
    3,921.85x = 5,910.97 × 3,380.57
  4. Step 4: Simplify right side
    3,921.85x = 19,982,447.85
  5. Step 5: Solve for x
    x = 19,982,447.85/3,921.85
  6. Step 6: Final answer
    x = 5,095.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.