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Finding the Fourth Proportional to 3,855.46, 5,784.16 and 1,082.14

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Solution

The fourth proportional to 3,855.46, 5,784.16 and 1,082.14 is: 1,623.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.46 : 5,784.16 = 1,082.14 : x
  2. Step 2: Convert to fraction form
    3,855.46/5,784.16 = 1,082.14/x
  3. Step 3: Cross multiply
    3,855.46x = 5,784.16 × 1,082.14
  4. Step 4: Simplify right side
    3,855.46x = 6,259,270.90
  5. Step 5: Solve for x
    x = 6,259,270.90/3,855.46
  6. Step 6: Final answer
    x = 1,623.48

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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.