Home / 3,883.52-5,359.22-2,115.12

Finding the Fourth Proportional to 3,883.52, 5,359.22 and 2,115.12

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Solution

The fourth proportional to 3,883.52, 5,359.22 and 2,115.12 is: 2,918.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,883.52 : 5,359.22 = 2,115.12 : x
  2. Step 2: Convert to fraction form
    3,883.52/5,359.22 = 2,115.12/x
  3. Step 3: Cross multiply
    3,883.52x = 5,359.22 × 2,115.12
  4. Step 4: Simplify right side
    3,883.52x = 11,335,393.41
  5. Step 5: Solve for x
    x = 11,335,393.41/3,883.52
  6. Step 6: Final answer
    x = 2,918.85

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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.