Home / 3,884.13-5,360.17-2,115.74

Finding the Fourth Proportional to 3,884.13, 5,360.17 and 2,115.74

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Solution

The fourth proportional to 3,884.13, 5,360.17 and 2,115.74 is: 2,919.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,884.13 : 5,360.17 = 2,115.74 : x
  2. Step 2: Convert to fraction form
    3,884.13/5,360.17 = 2,115.74/x
  3. Step 3: Cross multiply
    3,884.13x = 5,360.17 × 2,115.74
  4. Step 4: Simplify right side
    3,884.13x = 11,340,726.08
  5. Step 5: Solve for x
    x = 11,340,726.08/3,884.13
  6. Step 6: Final answer
    x = 2,919.76

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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.