Home / 1,988.22-2,743.31-1,202.25

Finding the Fourth Proportional to 1,988.22, 2,743.31 and 1,202.25

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Solution

The fourth proportional to 1,988.22, 2,743.31 and 1,202.25 is: 1,658.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.22 : 2,743.31 = 1,202.25 : x
  2. Step 2: Convert to fraction form
    1,988.22/2,743.31 = 1,202.25/x
  3. Step 3: Cross multiply
    1,988.22x = 2,743.31 × 1,202.25
  4. Step 4: Simplify right side
    1,988.22x = 3,298,131.58
  5. Step 5: Solve for x
    x = 3,298,131.58/1,988.22
  6. Step 6: Final answer
    x = 1,658.84

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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.