Home / 1,921.83-2,881.78-1,229.88

Finding the Fourth Proportional to 1,921.83, 2,881.78 and 1,229.88

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Solution

The fourth proportional to 1,921.83, 2,881.78 and 1,229.88 is: 1,844.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.83 : 2,881.78 = 1,229.88 : x
  2. Step 2: Convert to fraction form
    1,921.83/2,881.78 = 1,229.88/x
  3. Step 3: Cross multiply
    1,921.83x = 2,881.78 × 1,229.88
  4. Step 4: Simplify right side
    1,921.83x = 3,544,251.32
  5. Step 5: Solve for x
    x = 3,544,251.32/1,921.83
  6. Step 6: Final answer
    x = 1,844.21

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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.