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Finding the Fourth Proportional to 2,872.31, 3,964.15 and 1,753.01

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Solution

The fourth proportional to 2,872.31, 3,964.15 and 1,753.01 is: 2,419.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,872.31 : 3,964.15 = 1,753.01 : x
  2. Step 2: Convert to fraction form
    2,872.31/3,964.15 = 1,753.01/x
  3. Step 3: Cross multiply
    2,872.31x = 3,964.15 × 1,753.01
  4. Step 4: Simplify right side
    2,872.31x = 6,949,194.59
  5. Step 5: Solve for x
    x = 6,949,194.59/2,872.31
  6. Step 6: Final answer
    x = 2,419.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.