Home / 3,884.11-5,359.87-2,115.65

Finding the Fourth Proportional to 3,884.11, 5,359.87 and 2,115.65

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Solution

The fourth proportional to 3,884.11, 5,359.87 and 2,115.65 is: 2,919.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,884.11 : 5,359.87 = 2,115.65 : x
  2. Step 2: Convert to fraction form
    3,884.11/5,359.87 = 2,115.65/x
  3. Step 3: Cross multiply
    3,884.11x = 5,359.87 × 2,115.65
  4. Step 4: Simplify right side
    3,884.11x = 11,339,608.97
  5. Step 5: Solve for x
    x = 11,339,608.97/3,884.11
  6. Step 6: Final answer
    x = 2,919.49

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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.