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Finding the Fourth Proportional to 2,583.03, 3,872.49 and 939.36

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Solution

The fourth proportional to 2,583.03, 3,872.49 and 939.36 is: 1,408.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,583.03 : 3,872.49 = 939.36 : x
  2. Step 2: Convert to fraction form
    2,583.03/3,872.49 = 939.36/x
  3. Step 3: Cross multiply
    2,583.03x = 3,872.49 × 939.36
  4. Step 4: Simplify right side
    2,583.03x = 3,637,662.21
  5. Step 5: Solve for x
    x = 3,637,662.21/2,583.03
  6. Step 6: Final answer
    x = 1,408.29

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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.