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Finding the Fourth Proportional to 5,257.92, 7,255.92 and 2,867.88

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Solution

The fourth proportional to 5,257.92, 7,255.92 and 2,867.88 is: 3,957.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,257.92 : 7,255.92 = 2,867.88 : x
  2. Step 2: Convert to fraction form
    5,257.92/7,255.92 = 2,867.88/x
  3. Step 3: Cross multiply
    5,257.92x = 7,255.92 × 2,867.88
  4. Step 4: Simplify right side
    5,257.92x = 20,809,107.85
  5. Step 5: Solve for x
    x = 20,809,107.85/5,257.92
  6. Step 6: Final answer
    x = 3,957.67

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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.