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Finding the Fourth Proportional to 3,928.99, 5,881.79 and 2,538.27

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Solution

The fourth proportional to 3,928.99, 5,881.79 and 2,538.27 is: 3,799.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.99 : 5,881.79 = 2,538.27 : x
  2. Step 2: Convert to fraction form
    3,928.99/5,881.79 = 2,538.27/x
  3. Step 3: Cross multiply
    3,928.99x = 5,881.79 × 2,538.27
  4. Step 4: Simplify right side
    3,928.99x = 14,929,571.10
  5. Step 5: Solve for x
    x = 14,929,571.10/3,928.99
  6. Step 6: Final answer
    x = 3,799.85

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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.