Home / 3,719.73-5,579.82-1,221.09

Finding the Fourth Proportional to 3,719.73, 5,579.82 and 1,221.09

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Solution

The fourth proportional to 3,719.73, 5,579.82 and 1,221.09 is: 1,831.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,719.73 : 5,579.82 = 1,221.09 : x
  2. Step 2: Convert to fraction form
    3,719.73/5,579.82 = 1,221.09/x
  3. Step 3: Cross multiply
    3,719.73x = 5,579.82 × 1,221.09
  4. Step 4: Simplify right side
    3,719.73x = 6,813,462.40
  5. Step 5: Solve for x
    x = 6,813,462.40/3,719.73
  6. Step 6: Final answer
    x = 1,831.71

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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.