Home / 1,227.15-1,838.70-677.97

Finding the Fourth Proportional to 1,227.15, 1,838.70 and 677.97

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Solution

The fourth proportional to 1,227.15, 1,838.70 and 677.97 is: 1,015.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,227.15 : 1,838.70 = 677.97 : x
  2. Step 2: Convert to fraction form
    1,227.15/1,838.70 = 677.97/x
  3. Step 3: Cross multiply
    1,227.15x = 1,838.70 × 677.97
  4. Step 4: Simplify right side
    1,227.15x = 1,246,583.44
  5. Step 5: Solve for x
    x = 1,246,583.44/1,227.15
  6. Step 6: Final answer
    x = 1,015.84

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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.