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Finding the Fourth Proportional to 8,413.92, 12,620.88 and 2,258.08

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Solution

The fourth proportional to 8,413.92, 12,620.88 and 2,258.08 is: 3,387.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,413.92 : 12,620.88 = 2,258.08 : x
  2. Step 2: Convert to fraction form
    8,413.92/12,620.88 = 2,258.08/x
  3. Step 3: Cross multiply
    8,413.92x = 12,620.88 × 2,258.08
  4. Step 4: Simplify right side
    8,413.92x = 28,498,956.71
  5. Step 5: Solve for x
    x = 28,498,956.71/8,413.92
  6. Step 6: Final answer
    x = 3,387.12

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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.