Home / 1,227.90-1,836.78-1,119.77

Finding the Fourth Proportional to 1,227.90, 1,836.78 and 1,119.77

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Solution

The fourth proportional to 1,227.90, 1,836.78 and 1,119.77 is: 1,675.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,227.90 : 1,836.78 = 1,119.77 : x
  2. Step 2: Convert to fraction form
    1,227.90/1,836.78 = 1,119.77/x
  3. Step 3: Cross multiply
    1,227.90x = 1,836.78 × 1,119.77
  4. Step 4: Simplify right side
    1,227.90x = 2,056,761.96
  5. Step 5: Solve for x
    x = 2,056,761.96/1,227.90
  6. Step 6: Final answer
    x = 1,675.02

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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.