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Finding the Fourth Proportional to 3,912.44, 5,866.56 and 1,718.64

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Solution

The fourth proportional to 3,912.44, 5,866.56 and 1,718.64 is: 2,577.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.44 : 5,866.56 = 1,718.64 : x
  2. Step 2: Convert to fraction form
    3,912.44/5,866.56 = 1,718.64/x
  3. Step 3: Cross multiply
    3,912.44x = 5,866.56 × 1,718.64
  4. Step 4: Simplify right side
    3,912.44x = 10,082,504.68
  5. Step 5: Solve for x
    x = 10,082,504.68/3,912.44
  6. Step 6: Final answer
    x = 2,577.04

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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.