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Finding the Fourth Proportional to 8,422.76, 12,617.22 and 4,193.27

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Solution

The fourth proportional to 8,422.76, 12,617.22 and 4,193.27 is: 6,281.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,422.76 : 12,617.22 = 4,193.27 : x
  2. Step 2: Convert to fraction form
    8,422.76/12,617.22 = 4,193.27/x
  3. Step 3: Cross multiply
    8,422.76x = 12,617.22 × 4,193.27
  4. Step 4: Simplify right side
    8,422.76x = 52,907,413.01
  5. Step 5: Solve for x
    x = 52,907,413.01/8,422.76
  6. Step 6: Final answer
    x = 6,281.48

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1.5x scale

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.