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Finding the Fourth Proportional to 8,413.44, 12,620.17 and 2,490.42

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Solution

The fourth proportional to 8,413.44, 12,620.17 and 2,490.42 is: 3,735.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,413.44 : 12,620.17 = 2,490.42 : x
  2. Step 2: Convert to fraction form
    8,413.44/12,620.17 = 2,490.42/x
  3. Step 3: Cross multiply
    8,413.44x = 12,620.17 × 2,490.42
  4. Step 4: Simplify right side
    8,413.44x = 31,429,523.77
  5. Step 5: Solve for x
    x = 31,429,523.77/8,413.44
  6. Step 6: Final answer
    x = 3,735.63

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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.