Home / 3,922.54-5,413.17-2,154.31

Finding the Fourth Proportional to 3,922.54, 5,413.17 and 2,154.31

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Solution

The fourth proportional to 3,922.54, 5,413.17 and 2,154.31 is: 2,972.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,922.54 : 5,413.17 = 2,154.31 : x
  2. Step 2: Convert to fraction form
    3,922.54/5,413.17 = 2,154.31/x
  3. Step 3: Cross multiply
    3,922.54x = 5,413.17 × 2,154.31
  4. Step 4: Simplify right side
    3,922.54x = 11,661,608.43
  5. Step 5: Solve for x
    x = 11,661,608.43/3,922.54
  6. Step 6: Final answer
    x = 2,972.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.