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Finding the Fourth Proportional to 8,978.20, 13,467.92 and 3,055.68

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Solution

The fourth proportional to 8,978.20, 13,467.92 and 3,055.68 is: 4,583.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,978.20 : 13,467.92 = 3,055.68 : x
  2. Step 2: Convert to fraction form
    8,978.20/13,467.92 = 3,055.68/x
  3. Step 3: Cross multiply
    8,978.20x = 13,467.92 × 3,055.68
  4. Step 4: Simplify right side
    8,978.20x = 41,153,653.79
  5. Step 5: Solve for x
    x = 41,153,653.79/8,978.20
  6. Step 6: Final answer
    x = 4,583.73

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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.