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Finding the Fourth Proportional to 8,882.12, 13,319.31 and 4,721.13

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Solution

The fourth proportional to 8,882.12, 13,319.31 and 4,721.13 is: 7,079.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,882.12 : 13,319.31 = 4,721.13 : x
  2. Step 2: Convert to fraction form
    8,882.12/13,319.31 = 4,721.13/x
  3. Step 3: Cross multiply
    8,882.12x = 13,319.31 × 4,721.13
  4. Step 4: Simplify right side
    8,882.12x = 62,882,194.02
  5. Step 5: Solve for x
    x = 62,882,194.02/8,882.12
  6. Step 6: Final answer
    x = 7,079.64

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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.