Home / 2,226.56-3,072.53-1,231.78

Finding the Fourth Proportional to 2,226.56, 3,072.53 and 1,231.78

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Solution

The fourth proportional to 2,226.56, 3,072.53 and 1,231.78 is: 1,699.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,226.56 : 3,072.53 = 1,231.78 : x
  2. Step 2: Convert to fraction form
    2,226.56/3,072.53 = 1,231.78/x
  3. Step 3: Cross multiply
    2,226.56x = 3,072.53 × 1,231.78
  4. Step 4: Simplify right side
    2,226.56x = 3,784,681.00
  5. Step 5: Solve for x
    x = 3,784,681.00/2,226.56
  6. Step 6: Final answer
    x = 1,699.79

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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.