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Finding the Fourth Proportional to 3,419.92, 5,125.20 and 1,568.80

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Solution

The fourth proportional to 3,419.92, 5,125.20 and 1,568.80 is: 2,351.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,419.92 : 5,125.20 = 1,568.80 : x
  2. Step 2: Convert to fraction form
    3,419.92/5,125.20 = 1,568.80/x
  3. Step 3: Cross multiply
    3,419.92x = 5,125.20 × 1,568.80
  4. Step 4: Simplify right side
    3,419.92x = 8,040,413.76
  5. Step 5: Solve for x
    x = 8,040,413.76/3,419.92
  6. Step 6: Final answer
    x = 2,351.05

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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.