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Finding the Fourth Proportional to 3,882.42, 5,817.96 and 1,931.94

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Solution

The fourth proportional to 3,882.42, 5,817.96 and 1,931.94 is: 2,895.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,882.42 : 5,817.96 = 1,931.94 : x
  2. Step 2: Convert to fraction form
    3,882.42/5,817.96 = 1,931.94/x
  3. Step 3: Cross multiply
    3,882.42x = 5,817.96 × 1,931.94
  4. Step 4: Simplify right side
    3,882.42x = 11,239,949.64
  5. Step 5: Solve for x
    x = 11,239,949.64/3,882.42
  6. Step 6: Final answer
    x = 2,895.09

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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.