Home / 3,413.80-5,120.43-1,222.30

Finding the Fourth Proportional to 3,413.80, 5,120.43 and 1,222.30

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Solution

The fourth proportional to 3,413.80, 5,120.43 and 1,222.30 is: 1,833.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,413.80 : 5,120.43 = 1,222.30 : x
  2. Step 2: Convert to fraction form
    3,413.80/5,120.43 = 1,222.30/x
  3. Step 3: Cross multiply
    3,413.80x = 5,120.43 × 1,222.30
  4. Step 4: Simplify right side
    3,413.80x = 6,258,701.59
  5. Step 5: Solve for x
    x = 6,258,701.59/3,413.80
  6. Step 6: Final answer
    x = 1,833.35

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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.