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Finding the Fourth Proportional to 3,765.50, 5,648.79 and 1,168.64

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Solution

The fourth proportional to 3,765.50, 5,648.79 and 1,168.64 is: 1,753.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,765.50 : 5,648.79 = 1,168.64 : x
  2. Step 2: Convert to fraction form
    3,765.50/5,648.79 = 1,168.64/x
  3. Step 3: Cross multiply
    3,765.50x = 5,648.79 × 1,168.64
  4. Step 4: Simplify right side
    3,765.50x = 6,601,401.95
  5. Step 5: Solve for x
    x = 6,601,401.95/3,765.50
  6. Step 6: Final answer
    x = 1,753.13

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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.