Home / 1,997.08-2,755.88-1,112.98

Finding the Fourth Proportional to 1,997.08, 2,755.88 and 1,112.98

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Solution

The fourth proportional to 1,997.08, 2,755.88 and 1,112.98 is: 1,535.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,997.08 : 2,755.88 = 1,112.98 : x
  2. Step 2: Convert to fraction form
    1,997.08/2,755.88 = 1,112.98/x
  3. Step 3: Cross multiply
    1,997.08x = 2,755.88 × 1,112.98
  4. Step 4: Simplify right side
    1,997.08x = 3,067,239.32
  5. Step 5: Solve for x
    x = 3,067,239.32/1,997.08
  6. Step 6: Final answer
    x = 1,535.86

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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.