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Finding the Fourth Proportional to 6,645.78, 9,163.62 and 4,252.56

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Solution

The fourth proportional to 6,645.78, 9,163.62 and 4,252.56 is: 5,863.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,645.78 : 9,163.62 = 4,252.56 : x
  2. Step 2: Convert to fraction form
    6,645.78/9,163.62 = 4,252.56/x
  3. Step 3: Cross multiply
    6,645.78x = 9,163.62 × 4,252.56
  4. Step 4: Simplify right side
    6,645.78x = 38,968,843.87
  5. Step 5: Solve for x
    x = 38,968,843.87/6,645.78
  6. Step 6: Final answer
    x = 5,863.70

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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.