Home / 1,921.22-2,882.64-1,142.71

Finding the Fourth Proportional to 1,921.22, 2,882.64 and 1,142.71

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Solution

The fourth proportional to 1,921.22, 2,882.64 and 1,142.71 is: 1,714.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.22 : 2,882.64 = 1,142.71 : x
  2. Step 2: Convert to fraction form
    1,921.22/2,882.64 = 1,142.71/x
  3. Step 3: Cross multiply
    1,921.22x = 2,882.64 × 1,142.71
  4. Step 4: Simplify right side
    1,921.22x = 3,294,021.55
  5. Step 5: Solve for x
    x = 3,294,021.55/1,921.22
  6. Step 6: Final answer
    x = 1,714.55

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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.