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Finding the Fourth Proportional to 3,136.05, 4,704.08 and 827.55

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Solution

The fourth proportional to 3,136.05, 4,704.08 and 827.55 is: 1,241.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.05 : 4,704.08 = 827.55 : x
  2. Step 2: Convert to fraction form
    3,136.05/4,704.08 = 827.55/x
  3. Step 3: Cross multiply
    3,136.05x = 4,704.08 × 827.55
  4. Step 4: Simplify right side
    3,136.05x = 3,892,857.27
  5. Step 5: Solve for x
    x = 3,892,857.27/3,136.05
  6. Step 6: Final answer
    x = 1,241.33

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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.