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Finding the Fourth Proportional to 3,600.56, 5,401.20 and 1,292

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Solution

The fourth proportional to 3,600.56, 5,401.20 and 1,292 is: 1,938.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,600.56 : 5,401.20 = 1,292 : x
  2. Step 2: Convert to fraction form
    3,600.56/5,401.20 = 1,292/x
  3. Step 3: Cross multiply
    3,600.56x = 5,401.20 × 1,292
  4. Step 4: Simplify right side
    3,600.56x = 6,978,350.40
  5. Step 5: Solve for x
    x = 6,978,350.40/3,600.56
  6. Step 6: Final answer
    x = 1,938.13

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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.