Home / 3,922.64-5,413.34-2,154.28

Finding the Fourth Proportional to 3,922.64, 5,413.34 and 2,154.28

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Solution

The fourth proportional to 3,922.64, 5,413.34 and 2,154.28 is: 2,972.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,922.64 : 5,413.34 = 2,154.28 : x
  2. Step 2: Convert to fraction form
    3,922.64/5,413.34 = 2,154.28/x
  3. Step 3: Cross multiply
    3,922.64x = 5,413.34 × 2,154.28
  4. Step 4: Simplify right side
    3,922.64x = 11,661,864.33
  5. Step 5: Solve for x
    x = 11,661,864.33/3,922.64
  6. Step 6: Final answer
    x = 2,972.96

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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.