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Finding the Fourth Proportional to 3,379.72, 5,071.70 and 3,351.86

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Solution

The fourth proportional to 3,379.72, 5,071.70 and 3,351.86 is: 5,029.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,379.72 : 5,071.70 = 3,351.86 : x
  2. Step 2: Convert to fraction form
    3,379.72/5,071.70 = 3,351.86/x
  3. Step 3: Cross multiply
    3,379.72x = 5,071.70 × 3,351.86
  4. Step 4: Simplify right side
    3,379.72x = 16,999,628.36
  5. Step 5: Solve for x
    x = 16,999,628.36/3,379.72
  6. Step 6: Final answer
    x = 5,029.89

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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.