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Finding the Fourth Proportional to 8,979.44, 13,470.60 and 2,822

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Solution

The fourth proportional to 8,979.44, 13,470.60 and 2,822 is: 4,233.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.44 : 13,470.60 = 2,822 : x
  2. Step 2: Convert to fraction form
    8,979.44/13,470.60 = 2,822/x
  3. Step 3: Cross multiply
    8,979.44x = 13,470.60 × 2,822
  4. Step 4: Simplify right side
    8,979.44x = 38,014,033.20
  5. Step 5: Solve for x
    x = 38,014,033.20/8,979.44
  6. Step 6: Final answer
    x = 4,233.45

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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.