Home / 3,413.88-5,119.79-1,222.11

Finding the Fourth Proportional to 3,413.88, 5,119.79 and 1,222.11

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Solution

The fourth proportional to 3,413.88, 5,119.79 and 1,222.11 is: 1,832.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,413.88 : 5,119.79 = 1,222.11 : x
  2. Step 2: Convert to fraction form
    3,413.88/5,119.79 = 1,222.11/x
  3. Step 3: Cross multiply
    3,413.88x = 5,119.79 × 1,222.11
  4. Step 4: Simplify right side
    3,413.88x = 6,256,940.45
  5. Step 5: Solve for x
    x = 6,256,940.45/3,413.88
  6. Step 6: Final answer
    x = 1,832.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.