Home / 1,983.10-2,961.68-1,687.44

Finding the Fourth Proportional to 1,983.10, 2,961.68 and 1,687.44

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Solution

The fourth proportional to 1,983.10, 2,961.68 and 1,687.44 is: 2,520.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983.10 : 2,961.68 = 1,687.44 : x
  2. Step 2: Convert to fraction form
    1,983.10/2,961.68 = 1,687.44/x
  3. Step 3: Cross multiply
    1,983.10x = 2,961.68 × 1,687.44
  4. Step 4: Simplify right side
    1,983.10x = 4,997,657.30
  5. Step 5: Solve for x
    x = 4,997,657.30/1,983.10
  6. Step 6: Final answer
    x = 2,520.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.