Home / 3,413.28-5,115.60-2,947.68

Finding the Fourth Proportional to 3,413.28, 5,115.60 and 2,947.68

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Solution

The fourth proportional to 3,413.28, 5,115.60 and 2,947.68 is: 4,417.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,413.28 : 5,115.60 = 2,947.68 : x
  2. Step 2: Convert to fraction form
    3,413.28/5,115.60 = 2,947.68/x
  3. Step 3: Cross multiply
    3,413.28x = 5,115.60 × 2,947.68
  4. Step 4: Simplify right side
    3,413.28x = 15,079,151.81
  5. Step 5: Solve for x
    x = 15,079,151.81/3,413.28
  6. Step 6: Final answer
    x = 4,417.79

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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.