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Finding the Fourth Proportional to 3,561.78, 5,342.68 and 1,096.58

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Solution

The fourth proportional to 3,561.78, 5,342.68 and 1,096.58 is: 1,644.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,561.78 : 5,342.68 = 1,096.58 : x
  2. Step 2: Convert to fraction form
    3,561.78/5,342.68 = 1,096.58/x
  3. Step 3: Cross multiply
    3,561.78x = 5,342.68 × 1,096.58
  4. Step 4: Simplify right side
    3,561.78x = 5,858,676.03
  5. Step 5: Solve for x
    x = 5,858,676.03/3,561.78
  6. Step 6: Final answer
    x = 1,644.87

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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.