Home / 1,921.88-2,876.29-1,229.03

Finding the Fourth Proportional to 1,921.88, 2,876.29 and 1,229.03

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Solution

The fourth proportional to 1,921.88, 2,876.29 and 1,229.03 is: 1,839.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.88 : 2,876.29 = 1,229.03 : x
  2. Step 2: Convert to fraction form
    1,921.88/2,876.29 = 1,229.03/x
  3. Step 3: Cross multiply
    1,921.88x = 2,876.29 × 1,229.03
  4. Step 4: Simplify right side
    1,921.88x = 3,535,029.24
  5. Step 5: Solve for x
    x = 3,535,029.24/1,921.88
  6. Step 6: Final answer
    x = 1,839.36

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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.