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Finding the Fourth Proportional to 8,387.04, 12,582.09 and 3,453.99

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Solution

The fourth proportional to 8,387.04, 12,582.09 and 3,453.99 is: 5,181.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,387.04 : 12,582.09 = 3,453.99 : x
  2. Step 2: Convert to fraction form
    8,387.04/12,582.09 = 3,453.99/x
  3. Step 3: Cross multiply
    8,387.04x = 12,582.09 × 3,453.99
  4. Step 4: Simplify right side
    8,387.04x = 43,458,413.04
  5. Step 5: Solve for x
    x = 43,458,413.04/8,387.04
  6. Step 6: Final answer
    x = 5,181.62

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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.