Home / 1,982.17-2,735.20-1,131.44

Finding the Fourth Proportional to 1,982.17, 2,735.20 and 1,131.44

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Solution

The fourth proportional to 1,982.17, 2,735.20 and 1,131.44 is: 1,561.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,982.17 : 2,735.20 = 1,131.44 : x
  2. Step 2: Convert to fraction form
    1,982.17/2,735.20 = 1,131.44/x
  3. Step 3: Cross multiply
    1,982.17x = 2,735.20 × 1,131.44
  4. Step 4: Simplify right side
    1,982.17x = 3,094,702.43
  5. Step 5: Solve for x
    x = 3,094,702.43/1,982.17
  6. Step 6: Final answer
    x = 1,561.27

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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.