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Finding the Fourth Proportional to 2,775.52, 4,163.27 and 827.72

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Solution

The fourth proportional to 2,775.52, 4,163.27 and 827.72 is: 1,241.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.52 : 4,163.27 = 827.72 : x
  2. Step 2: Convert to fraction form
    2,775.52/4,163.27 = 827.72/x
  3. Step 3: Cross multiply
    2,775.52x = 4,163.27 × 827.72
  4. Step 4: Simplify right side
    2,775.52x = 3,446,019.49
  5. Step 5: Solve for x
    x = 3,446,019.49/2,775.52
  6. Step 6: Final answer
    x = 1,241.58

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Double scale
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Similar ratio
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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.