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Finding the Fourth Proportional to 8,668.40, 13,001.76 and 2,428.97

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Solution

The fourth proportional to 8,668.40, 13,001.76 and 2,428.97 is: 3,643.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.40 : 13,001.76 = 2,428.97 : x
  2. Step 2: Convert to fraction form
    8,668.40/13,001.76 = 2,428.97/x
  3. Step 3: Cross multiply
    8,668.40x = 13,001.76 × 2,428.97
  4. Step 4: Simplify right side
    8,668.40x = 31,580,819.98
  5. Step 5: Solve for x
    x = 31,580,819.98/8,668.40
  6. Step 6: Final answer
    x = 3,643.21

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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.