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Finding the Fourth Proportional to 3,938, 5,907 and 1,629.56

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Solution

The fourth proportional to 3,938, 5,907 and 1,629.56 is: 2,444.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938 : 5,907 = 1,629.56 : x
  2. Step 2: Convert to fraction form
    3,938/5,907 = 1,629.56/x
  3. Step 3: Cross multiply
    3,938x = 5,907 × 1,629.56
  4. Step 4: Simplify right side
    3,938x = 9,625,810.92
  5. Step 5: Solve for x
    x = 9,625,810.92/3,938
  6. Step 6: Final answer
    x = 2,444.34

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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.