Home / 2,172.12-2,996.42-1,425.97

Finding the Fourth Proportional to 2,172.12, 2,996.42 and 1,425.97

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Solution

The fourth proportional to 2,172.12, 2,996.42 and 1,425.97 is: 1,967.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.12 : 2,996.42 = 1,425.97 : x
  2. Step 2: Convert to fraction form
    2,172.12/2,996.42 = 1,425.97/x
  3. Step 3: Cross multiply
    2,172.12x = 2,996.42 × 1,425.97
  4. Step 4: Simplify right side
    2,172.12x = 4,272,797.90
  5. Step 5: Solve for x
    x = 4,272,797.90/2,172.12
  6. Step 6: Final answer
    x = 1,967.11

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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.