Home / 1,988.22-2,743.56-1,103.97

Finding the Fourth Proportional to 1,988.22, 2,743.56 and 1,103.97

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Solution

The fourth proportional to 1,988.22, 2,743.56 and 1,103.97 is: 1,523.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.22 : 2,743.56 = 1,103.97 : x
  2. Step 2: Convert to fraction form
    1,988.22/2,743.56 = 1,103.97/x
  3. Step 3: Cross multiply
    1,988.22x = 2,743.56 × 1,103.97
  4. Step 4: Simplify right side
    1,988.22x = 3,028,807.93
  5. Step 5: Solve for x
    x = 3,028,807.93/1,988.22
  6. Step 6: Final answer
    x = 1,523.38

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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.