Home / 1,243.44-1,872.18-1,119.60

Finding the Fourth Proportional to 1,243.44, 1,872.18 and 1,119.60

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Solution

The fourth proportional to 1,243.44, 1,872.18 and 1,119.60 is: 1,685.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243.44 : 1,872.18 = 1,119.60 : x
  2. Step 2: Convert to fraction form
    1,243.44/1,872.18 = 1,119.60/x
  3. Step 3: Cross multiply
    1,243.44x = 1,872.18 × 1,119.60
  4. Step 4: Simplify right side
    1,243.44x = 2,096,092.73
  5. Step 5: Solve for x
    x = 2,096,092.73/1,243.44
  6. Step 6: Final answer
    x = 1,685.72

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.