Home / 3,922.52-5,413.18-2,154.22

Finding the Fourth Proportional to 3,922.52, 5,413.18 and 2,154.22

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Solution

The fourth proportional to 3,922.52, 5,413.18 and 2,154.22 is: 2,972.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,922.52 : 5,413.18 = 2,154.22 : x
  2. Step 2: Convert to fraction form
    3,922.52/5,413.18 = 2,154.22/x
  3. Step 3: Cross multiply
    3,922.52x = 5,413.18 × 2,154.22
  4. Step 4: Simplify right side
    3,922.52x = 11,661,180.62
  5. Step 5: Solve for x
    x = 11,661,180.62/3,922.52
  6. Step 6: Final answer
    x = 2,972.88

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1.5x scale

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.