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Finding the Fourth Proportional to 1,993.08, 2,750.43 and 1,108.90

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Solution

The fourth proportional to 1,993.08, 2,750.43 and 1,108.90 is: 1,530.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993.08 : 2,750.43 = 1,108.90 : x
  2. Step 2: Convert to fraction form
    1,993.08/2,750.43 = 1,108.90/x
  3. Step 3: Cross multiply
    1,993.08x = 2,750.43 × 1,108.90
  4. Step 4: Simplify right side
    1,993.08x = 3,049,951.83
  5. Step 5: Solve for x
    x = 3,049,951.83/1,993.08
  6. Step 6: Final answer
    x = 1,530.27

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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.