Home / 1,851.44-2,553.87-1,221.97

Finding the Fourth Proportional to 1,851.44, 2,553.87 and 1,221.97

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Solution

The fourth proportional to 1,851.44, 2,553.87 and 1,221.97 is: 1,685.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,851.44 : 2,553.87 = 1,221.97 : x
  2. Step 2: Convert to fraction form
    1,851.44/2,553.87 = 1,221.97/x
  3. Step 3: Cross multiply
    1,851.44x = 2,553.87 × 1,221.97
  4. Step 4: Simplify right side
    1,851.44x = 3,120,752.52
  5. Step 5: Solve for x
    x = 3,120,752.52/1,851.44
  6. Step 6: Final answer
    x = 1,685.58

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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.