Home / 1,227.44-1,842.72-1,215.20

Finding the Fourth Proportional to 1,227.44, 1,842.72 and 1,215.20

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Solution

The fourth proportional to 1,227.44, 1,842.72 and 1,215.20 is: 1,824.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,227.44 : 1,842.72 = 1,215.20 : x
  2. Step 2: Convert to fraction form
    1,227.44/1,842.72 = 1,215.20/x
  3. Step 3: Cross multiply
    1,227.44x = 1,842.72 × 1,215.20
  4. Step 4: Simplify right side
    1,227.44x = 2,239,273.34
  5. Step 5: Solve for x
    x = 2,239,273.34/1,227.44
  6. Step 6: Final answer
    x = 1,824.34

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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.