Home / 1,418.92-1,954.20-1,222.36

Finding the Fourth Proportional to 1,418.92, 1,954.20 and 1,222.36

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Solution

The fourth proportional to 1,418.92, 1,954.20 and 1,222.36 is: 1,683.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.92 : 1,954.20 = 1,222.36 : x
  2. Step 2: Convert to fraction form
    1,418.92/1,954.20 = 1,222.36/x
  3. Step 3: Cross multiply
    1,418.92x = 1,954.20 × 1,222.36
  4. Step 4: Simplify right side
    1,418.92x = 2,388,735.91
  5. Step 5: Solve for x
    x = 2,388,735.91/1,418.92
  6. Step 6: Final answer
    x = 1,683.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.