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Finding the Fourth Proportional to 7,172.88, 10,755.84 and 2,668.48

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Solution

The fourth proportional to 7,172.88, 10,755.84 and 2,668.48 is: 4,001.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172.88 : 10,755.84 = 2,668.48 : x
  2. Step 2: Convert to fraction form
    7,172.88/10,755.84 = 2,668.48/x
  3. Step 3: Cross multiply
    7,172.88x = 10,755.84 × 2,668.48
  4. Step 4: Simplify right side
    7,172.88x = 28,701,743.92
  5. Step 5: Solve for x
    x = 28,701,743.92/7,172.88
  6. Step 6: Final answer
    x = 4,001.43

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1.5x scale

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.