Home / 1,228.93-1,839.27-1,127.77

Finding the Fourth Proportional to 1,228.93, 1,839.27 and 1,127.77

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Solution

The fourth proportional to 1,228.93, 1,839.27 and 1,127.77 is: 1,687.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228.93 : 1,839.27 = 1,127.77 : x
  2. Step 2: Convert to fraction form
    1,228.93/1,839.27 = 1,127.77/x
  3. Step 3: Cross multiply
    1,228.93x = 1,839.27 × 1,127.77
  4. Step 4: Simplify right side
    1,228.93x = 2,074,273.53
  5. Step 5: Solve for x
    x = 2,074,273.53/1,228.93
  6. Step 6: Final answer
    x = 1,687.87

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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.