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Finding the Fourth Proportional to 1,999.95, 2,759.82 and 1,103.66

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Solution

The fourth proportional to 1,999.95, 2,759.82 and 1,103.66 is: 1,522.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,999.95 : 2,759.82 = 1,103.66 : x
  2. Step 2: Convert to fraction form
    1,999.95/2,759.82 = 1,103.66/x
  3. Step 3: Cross multiply
    1,999.95x = 2,759.82 × 1,103.66
  4. Step 4: Simplify right side
    1,999.95x = 3,045,902.94
  5. Step 5: Solve for x
    x = 3,045,902.94/1,999.95
  6. Step 6: Final answer
    x = 1,522.99

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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.