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Finding the Fourth Proportional to 3,930.42, 5,891.50 and 1,738.63

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Solution

The fourth proportional to 3,930.42, 5,891.50 and 1,738.63 is: 2,606.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.42 : 5,891.50 = 1,738.63 : x
  2. Step 2: Convert to fraction form
    3,930.42/5,891.50 = 1,738.63/x
  3. Step 3: Cross multiply
    3,930.42x = 5,891.50 × 1,738.63
  4. Step 4: Simplify right side
    3,930.42x = 10,243,148.18
  5. Step 5: Solve for x
    x = 10,243,148.18/3,930.42
  6. Step 6: Final answer
    x = 2,606.12

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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.