Home / 3,922.50-5,413.07-2,154.23

Finding the Fourth Proportional to 3,922.50, 5,413.07 and 2,154.23

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Solution

The fourth proportional to 3,922.50, 5,413.07 and 2,154.23 is: 2,972.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,922.50 : 5,413.07 = 2,154.23 : x
  2. Step 2: Convert to fraction form
    3,922.50/5,413.07 = 2,154.23/x
  3. Step 3: Cross multiply
    3,922.50x = 5,413.07 × 2,154.23
  4. Step 4: Simplify right side
    3,922.50x = 11,660,959.95
  5. Step 5: Solve for x
    x = 11,660,959.95/3,922.50
  6. Step 6: Final answer
    x = 2,972.84

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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.