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Finding the Fourth Proportional to 3,309.91, 4,954.21 and 1,747.68

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Solution

The fourth proportional to 3,309.91, 4,954.21 and 1,747.68 is: 2,615.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,309.91 : 4,954.21 = 1,747.68 : x
  2. Step 2: Convert to fraction form
    3,309.91/4,954.21 = 1,747.68/x
  3. Step 3: Cross multiply
    3,309.91x = 4,954.21 × 1,747.68
  4. Step 4: Simplify right side
    3,309.91x = 8,658,373.73
  5. Step 5: Solve for x
    x = 8,658,373.73/3,309.91
  6. Step 6: Final answer
    x = 2,615.89

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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.