Home / 3,884.28-5,360.31-2,115.89

Finding the Fourth Proportional to 3,884.28, 5,360.31 and 2,115.89

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Solution

The fourth proportional to 3,884.28, 5,360.31 and 2,115.89 is: 2,919.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,884.28 : 5,360.31 = 2,115.89 : x
  2. Step 2: Convert to fraction form
    3,884.28/5,360.31 = 2,115.89/x
  3. Step 3: Cross multiply
    3,884.28x = 5,360.31 × 2,115.89
  4. Step 4: Simplify right side
    3,884.28x = 11,341,799.52
  5. Step 5: Solve for x
    x = 11,341,799.52/3,884.28
  6. Step 6: Final answer
    x = 2,919.92

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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.