Home / 1,982.39-2,735.66-1,143.09

Finding the Fourth Proportional to 1,982.39, 2,735.66 and 1,143.09

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Solution

The fourth proportional to 1,982.39, 2,735.66 and 1,143.09 is: 1,577.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,982.39 : 2,735.66 = 1,143.09 : x
  2. Step 2: Convert to fraction form
    1,982.39/2,735.66 = 1,143.09/x
  3. Step 3: Cross multiply
    1,982.39x = 2,735.66 × 1,143.09
  4. Step 4: Simplify right side
    1,982.39x = 3,127,108.45
  5. Step 5: Solve for x
    x = 3,127,108.45/1,982.39
  6. Step 6: Final answer
    x = 1,577.45

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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.