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Finding the Fourth Proportional to 3,600.36, 5,400.54 and 1,408.80

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Solution

The fourth proportional to 3,600.36, 5,400.54 and 1,408.80 is: 2,113.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,600.36 : 5,400.54 = 1,408.80 : x
  2. Step 2: Convert to fraction form
    3,600.36/5,400.54 = 1,408.80/x
  3. Step 3: Cross multiply
    3,600.36x = 5,400.54 × 1,408.80
  4. Step 4: Simplify right side
    3,600.36x = 7,608,301.00
  5. Step 5: Solve for x
    x = 7,608,301.00/3,600.36
  6. Step 6: Final answer
    x = 2,113.21

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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.