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Finding the Fourth Proportional to 9,621.76, 13,282.48 and 6,791.44

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Solution

The fourth proportional to 9,621.76, 13,282.48 and 6,791.44 is: 9,375.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,621.76 : 13,282.48 = 6,791.44 : x
  2. Step 2: Convert to fraction form
    9,621.76/13,282.48 = 6,791.44/x
  3. Step 3: Cross multiply
    9,621.76x = 13,282.48 × 6,791.44
  4. Step 4: Simplify right side
    9,621.76x = 90,207,165.97
  5. Step 5: Solve for x
    x = 90,207,165.97/9,621.76
  6. Step 6: Final answer
    x = 9,375.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.