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Finding the Fourth Proportional to 3,765.68, 5,647.50 and 1,425.62

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Solution

The fourth proportional to 3,765.68, 5,647.50 and 1,425.62 is: 2,138.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,765.68 : 5,647.50 = 1,425.62 : x
  2. Step 2: Convert to fraction form
    3,765.68/5,647.50 = 1,425.62/x
  3. Step 3: Cross multiply
    3,765.68x = 5,647.50 × 1,425.62
  4. Step 4: Simplify right side
    3,765.68x = 8,051,188.95
  5. Step 5: Solve for x
    x = 8,051,188.95/3,765.68
  6. Step 6: Final answer
    x = 2,138.04

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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.