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Finding the Fourth Proportional to 2,665.97, 3,995.46 and 1,431.94

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Solution

The fourth proportional to 2,665.97, 3,995.46 and 1,431.94 is: 2,146.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,665.97 : 3,995.46 = 1,431.94 : x
  2. Step 2: Convert to fraction form
    2,665.97/3,995.46 = 1,431.94/x
  3. Step 3: Cross multiply
    2,665.97x = 3,995.46 × 1,431.94
  4. Step 4: Simplify right side
    2,665.97x = 5,721,258.99
  5. Step 5: Solve for x
    x = 5,721,258.99/2,665.97
  6. Step 6: Final answer
    x = 2,146.03

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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.