Home / 3,691.78-5,538.08-1,226.41

Finding the Fourth Proportional to 3,691.78, 5,538.08 and 1,226.41

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Solution

The fourth proportional to 3,691.78, 5,538.08 and 1,226.41 is: 1,839.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,691.78 : 5,538.08 = 1,226.41 : x
  2. Step 2: Convert to fraction form
    3,691.78/5,538.08 = 1,226.41/x
  3. Step 3: Cross multiply
    3,691.78x = 5,538.08 × 1,226.41
  4. Step 4: Simplify right side
    3,691.78x = 6,791,956.69
  5. Step 5: Solve for x
    x = 6,791,956.69/3,691.78
  6. Step 6: Final answer
    x = 1,839.75

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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.