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Finding the Fourth Proportional to 3,172.49, 4,375.15 and 2,724.22

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Solution

The fourth proportional to 3,172.49, 4,375.15 and 2,724.22 is: 3,756.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.49 : 4,375.15 = 2,724.22 : x
  2. Step 2: Convert to fraction form
    3,172.49/4,375.15 = 2,724.22/x
  3. Step 3: Cross multiply
    3,172.49x = 4,375.15 × 2,724.22
  4. Step 4: Simplify right side
    3,172.49x = 11,918,857.51
  5. Step 5: Solve for x
    x = 11,918,857.51/3,172.49
  6. Step 6: Final answer
    x = 3,756.94

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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.