Home / 3,906.20-5,390.54-2,413.76

Finding the Fourth Proportional to 3,906.20, 5,390.54 and 2,413.76

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Solution

The fourth proportional to 3,906.20, 5,390.54 and 2,413.76 is: 3,330.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,906.20 : 5,390.54 = 2,413.76 : x
  2. Step 2: Convert to fraction form
    3,906.20/5,390.54 = 2,413.76/x
  3. Step 3: Cross multiply
    3,906.20x = 5,390.54 × 2,413.76
  4. Step 4: Simplify right side
    3,906.20x = 13,011,469.83
  5. Step 5: Solve for x
    x = 13,011,469.83/3,906.20
  6. Step 6: Final answer
    x = 3,330.98

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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.