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Finding the Fourth Proportional to 3,892.54, 5,837.84 and 1,118.56

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Solution

The fourth proportional to 3,892.54, 5,837.84 and 1,118.56 is: 1,677.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,892.54 : 5,837.84 = 1,118.56 : x
  2. Step 2: Convert to fraction form
    3,892.54/5,837.84 = 1,118.56/x
  3. Step 3: Cross multiply
    3,892.54x = 5,837.84 × 1,118.56
  4. Step 4: Simplify right side
    3,892.54x = 6,529,974.31
  5. Step 5: Solve for x
    x = 6,529,974.31/3,892.54
  6. Step 6: Final answer
    x = 1,677.56

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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.