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Finding the Fourth Proportional to 3,408.78, 5,113.23 and 1,068.73

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Solution

The fourth proportional to 3,408.78, 5,113.23 and 1,068.73 is: 1,603.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,408.78 : 5,113.23 = 1,068.73 : x
  2. Step 2: Convert to fraction form
    3,408.78/5,113.23 = 1,068.73/x
  3. Step 3: Cross multiply
    3,408.78x = 5,113.23 × 1,068.73
  4. Step 4: Simplify right side
    3,408.78x = 5,464,644.17
  5. Step 5: Solve for x
    x = 5,464,644.17/3,408.78
  6. Step 6: Final answer
    x = 1,603.11

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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.