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Finding the Fourth Proportional to 8,788.78, 13,183.15 and 2,215.47

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Solution

The fourth proportional to 8,788.78, 13,183.15 and 2,215.47 is: 3,323.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,788.78 : 13,183.15 = 2,215.47 : x
  2. Step 2: Convert to fraction form
    8,788.78/13,183.15 = 2,215.47/x
  3. Step 3: Cross multiply
    8,788.78x = 13,183.15 × 2,215.47
  4. Step 4: Simplify right side
    8,788.78x = 29,206,873.33
  5. Step 5: Solve for x
    x = 29,206,873.33/8,788.78
  6. Step 6: Final answer
    x = 3,323.20

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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.