Home / 3,922.48-5,413.09-2,154.16

Finding the Fourth Proportional to 3,922.48, 5,413.09 and 2,154.16

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Solution

The fourth proportional to 3,922.48, 5,413.09 and 2,154.16 is: 2,972.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,922.48 : 5,413.09 = 2,154.16 : x
  2. Step 2: Convert to fraction form
    3,922.48/5,413.09 = 2,154.16/x
  3. Step 3: Cross multiply
    3,922.48x = 5,413.09 × 2,154.16
  4. Step 4: Simplify right side
    3,922.48x = 11,660,661.95
  5. Step 5: Solve for x
    x = 11,660,661.95/3,922.48
  6. Step 6: Final answer
    x = 2,972.78

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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.