Home / 3,121.19-4,682.81-1,273.41

Finding the Fourth Proportional to 3,121.19, 4,682.81 and 1,273.41

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Solution

The fourth proportional to 3,121.19, 4,682.81 and 1,273.41 is: 1,910.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.19 : 4,682.81 = 1,273.41 : x
  2. Step 2: Convert to fraction form
    3,121.19/4,682.81 = 1,273.41/x
  3. Step 3: Cross multiply
    3,121.19x = 4,682.81 × 1,273.41
  4. Step 4: Simplify right side
    3,121.19x = 5,963,137.08
  5. Step 5: Solve for x
    x = 5,963,137.08/3,121.19
  6. Step 6: Final answer
    x = 1,910.53

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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.