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Finding the Fourth Proportional to 3,375.78, 5,064.73 and 1,402.35

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Solution

The fourth proportional to 3,375.78, 5,064.73 and 1,402.35 is: 2,103.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,375.78 : 5,064.73 = 1,402.35 : x
  2. Step 2: Convert to fraction form
    3,375.78/5,064.73 = 1,402.35/x
  3. Step 3: Cross multiply
    3,375.78x = 5,064.73 × 1,402.35
  4. Step 4: Simplify right side
    3,375.78x = 7,102,524.12
  5. Step 5: Solve for x
    x = 7,102,524.12/3,375.78
  6. Step 6: Final answer
    x = 2,103.97

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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.