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Finding the Fourth Proportional to 8,865.86, 13,300.67 and 4,425.90

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Solution

The fourth proportional to 8,865.86, 13,300.67 and 4,425.90 is: 6,639.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,865.86 : 13,300.67 = 4,425.90 : x
  2. Step 2: Convert to fraction form
    8,865.86/13,300.67 = 4,425.90/x
  3. Step 3: Cross multiply
    8,865.86x = 13,300.67 × 4,425.90
  4. Step 4: Simplify right side
    8,865.86x = 58,867,413.22
  5. Step 5: Solve for x
    x = 58,867,413.22/8,865.86
  6. Step 6: Final answer
    x = 6,639.79

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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.