Home / 3,883.59-5,359.34-2,115.17

Finding the Fourth Proportional to 3,883.59, 5,359.34 and 2,115.17

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Solution

The fourth proportional to 3,883.59, 5,359.34 and 2,115.17 is: 2,918.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,883.59 : 5,359.34 = 2,115.17 : x
  2. Step 2: Convert to fraction form
    3,883.59/5,359.34 = 2,115.17/x
  3. Step 3: Cross multiply
    3,883.59x = 5,359.34 × 2,115.17
  4. Step 4: Simplify right side
    3,883.59x = 11,335,877.82
  5. Step 5: Solve for x
    x = 11,335,877.82/3,883.59
  6. Step 6: Final answer
    x = 2,918.92

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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.