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Finding the Fourth Proportional to 3,493.89, 5,239.89 and 1,301.40

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Solution

The fourth proportional to 3,493.89, 5,239.89 and 1,301.40 is: 1,951.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,493.89 : 5,239.89 = 1,301.40 : x
  2. Step 2: Convert to fraction form
    3,493.89/5,239.89 = 1,301.40/x
  3. Step 3: Cross multiply
    3,493.89x = 5,239.89 × 1,301.40
  4. Step 4: Simplify right side
    3,493.89x = 6,819,192.85
  5. Step 5: Solve for x
    x = 6,819,192.85/3,493.89
  6. Step 6: Final answer
    x = 1,951.75

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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.