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Finding the Fourth Proportional to 8,413.88, 12,620.82 and 2,257.88

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Solution

The fourth proportional to 8,413.88, 12,620.82 and 2,257.88 is: 3,386.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,413.88 : 12,620.82 = 2,257.88 : x
  2. Step 2: Convert to fraction form
    8,413.88/12,620.82 = 2,257.88/x
  3. Step 3: Cross multiply
    8,413.88x = 12,620.82 × 2,257.88
  4. Step 4: Simplify right side
    8,413.88x = 28,496,297.06
  5. Step 5: Solve for x
    x = 28,496,297.06/8,413.88
  6. Step 6: Final answer
    x = 3,386.82

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Similar ratio
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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.