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Finding the Fourth Proportional to 8,654.13, 12,979.80 and 2,413.49

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Solution

The fourth proportional to 8,654.13, 12,979.80 and 2,413.49 is: 3,619.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,654.13 : 12,979.80 = 2,413.49 : x
  2. Step 2: Convert to fraction form
    8,654.13/12,979.80 = 2,413.49/x
  3. Step 3: Cross multiply
    8,654.13x = 12,979.80 × 2,413.49
  4. Step 4: Simplify right side
    8,654.13x = 31,326,552.60
  5. Step 5: Solve for x
    x = 31,326,552.60/8,654.13
  6. Step 6: Final answer
    x = 3,619.84

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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.