Home / 8,413.76-12,617.49-2,790.39

Finding the Fourth Proportional to 8,413.76, 12,617.49 and 2,790.39

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Solution

The fourth proportional to 8,413.76, 12,617.49 and 2,790.39 is: 4,184.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,413.76 : 12,617.49 = 2,790.39 : x
  2. Step 2: Convert to fraction form
    8,413.76/12,617.49 = 2,790.39/x
  3. Step 3: Cross multiply
    8,413.76x = 12,617.49 × 2,790.39
  4. Step 4: Simplify right side
    8,413.76x = 35,207,717.92
  5. Step 5: Solve for x
    x = 35,207,717.92/8,413.76
  6. Step 6: Final answer
    x = 4,184.54

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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.