Home / 1,971.34-2,954.93-1,229.78

Finding the Fourth Proportional to 1,971.34, 2,954.93 and 1,229.78

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Solution

The fourth proportional to 1,971.34, 2,954.93 and 1,229.78 is: 1,843.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.34 : 2,954.93 = 1,229.78 : x
  2. Step 2: Convert to fraction form
    1,971.34/2,954.93 = 1,229.78/x
  3. Step 3: Cross multiply
    1,971.34x = 2,954.93 × 1,229.78
  4. Step 4: Simplify right side
    1,971.34x = 3,633,921.97
  5. Step 5: Solve for x
    x = 3,633,921.97/1,971.34
  6. Step 6: Final answer
    x = 1,843.38

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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.