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Finding the Fourth Proportional to 3,491.79, 5,239.25 and 1,738.55

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Solution

The fourth proportional to 3,491.79, 5,239.25 and 1,738.55 is: 2,608.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,491.79 : 5,239.25 = 1,738.55 : x
  2. Step 2: Convert to fraction form
    3,491.79/5,239.25 = 1,738.55/x
  3. Step 3: Cross multiply
    3,491.79x = 5,239.25 × 1,738.55
  4. Step 4: Simplify right side
    3,491.79x = 9,108,663.20
  5. Step 5: Solve for x
    x = 9,108,663.20/3,491.79
  6. Step 6: Final answer
    x = 2,608.59

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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.