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Finding the Fourth Proportional to 8,855.43, 13,286.21 and 3,928.52

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Solution

The fourth proportional to 8,855.43, 13,286.21 and 3,928.52 is: 5,894.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,855.43 : 13,286.21 = 3,928.52 : x
  2. Step 2: Convert to fraction form
    8,855.43/13,286.21 = 3,928.52/x
  3. Step 3: Cross multiply
    8,855.43x = 13,286.21 × 3,928.52
  4. Step 4: Simplify right side
    8,855.43x = 52,195,102.65
  5. Step 5: Solve for x
    x = 52,195,102.65/8,855.43
  6. Step 6: Final answer
    x = 5,894.14

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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.