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Finding the Fourth Proportional to 3,883.92, 5,824.62 and 1,286.25

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Solution

The fourth proportional to 3,883.92, 5,824.62 and 1,286.25 is: 1,928.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,883.92 : 5,824.62 = 1,286.25 : x
  2. Step 2: Convert to fraction form
    3,883.92/5,824.62 = 1,286.25/x
  3. Step 3: Cross multiply
    3,883.92x = 5,824.62 × 1,286.25
  4. Step 4: Simplify right side
    3,883.92x = 7,491,917.48
  5. Step 5: Solve for x
    x = 7,491,917.48/3,883.92
  6. Step 6: Final answer
    x = 1,928.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.