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Finding the Fourth Proportional to 7,067.72, 9,753.54 and 3,924.20

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Solution

The fourth proportional to 7,067.72, 9,753.54 and 3,924.20 is: 5,415.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,067.72 : 9,753.54 = 3,924.20 : x
  2. Step 2: Convert to fraction form
    7,067.72/9,753.54 = 3,924.20/x
  3. Step 3: Cross multiply
    7,067.72x = 9,753.54 × 3,924.20
  4. Step 4: Simplify right side
    7,067.72x = 38,274,841.67
  5. Step 5: Solve for x
    x = 38,274,841.67/7,067.72
  6. Step 6: Final answer
    x = 5,415.44

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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.