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Finding the Fourth Proportional to 8,413.43, 12,621.30 and 2,865.29

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Solution

The fourth proportional to 8,413.43, 12,621.30 and 2,865.29 is: 4,298.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,413.43 : 12,621.30 = 2,865.29 : x
  2. Step 2: Convert to fraction form
    8,413.43/12,621.30 = 2,865.29/x
  3. Step 3: Cross multiply
    8,413.43x = 12,621.30 × 2,865.29
  4. Step 4: Simplify right side
    8,413.43x = 36,163,684.68
  5. Step 5: Solve for x
    x = 36,163,684.68/8,413.43
  6. Step 6: Final answer
    x = 4,298.33

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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.