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Finding the Fourth Proportional to 3,969.65, 5,954.49 and 1,629.05

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Solution

The fourth proportional to 3,969.65, 5,954.49 and 1,629.05 is: 2,443.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969.65 : 5,954.49 = 1,629.05 : x
  2. Step 2: Convert to fraction form
    3,969.65/5,954.49 = 1,629.05/x
  3. Step 3: Cross multiply
    3,969.65x = 5,954.49 × 1,629.05
  4. Step 4: Simplify right side
    3,969.65x = 9,700,132.16
  5. Step 5: Solve for x
    x = 9,700,132.16/3,969.65
  6. Step 6: Final answer
    x = 2,443.58

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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.