Home / 3,413.64-5,121.72-2,761.56

Finding the Fourth Proportional to 3,413.64, 5,121.72 and 2,761.56

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Solution

The fourth proportional to 3,413.64, 5,121.72 and 2,761.56 is: 4,143.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,413.64 : 5,121.72 = 2,761.56 : x
  2. Step 2: Convert to fraction form
    3,413.64/5,121.72 = 2,761.56/x
  3. Step 3: Cross multiply
    3,413.64x = 5,121.72 × 2,761.56
  4. Step 4: Simplify right side
    3,413.64x = 14,143,937.08
  5. Step 5: Solve for x
    x = 14,143,937.08/3,413.64
  6. Step 6: Final answer
    x = 4,143.36

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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.