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Finding the Fourth Proportional to 8,668.67, 13,003.34 and 2,428.52

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Solution

The fourth proportional to 8,668.67, 13,003.34 and 2,428.52 is: 3,642.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.67 : 13,003.34 = 2,428.52 : x
  2. Step 2: Convert to fraction form
    8,668.67/13,003.34 = 2,428.52/x
  3. Step 3: Cross multiply
    8,668.67x = 13,003.34 × 2,428.52
  4. Step 4: Simplify right side
    8,668.67x = 31,578,891.62
  5. Step 5: Solve for x
    x = 31,578,891.62/8,668.67
  6. Step 6: Final answer
    x = 3,642.88

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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.