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Finding the Fourth Proportional to 1,999.67, 2,759.52 and 1,160.54

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Solution

The fourth proportional to 1,999.67, 2,759.52 and 1,160.54 is: 1,601.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,999.67 : 2,759.52 = 1,160.54 : x
  2. Step 2: Convert to fraction form
    1,999.67/2,759.52 = 1,160.54/x
  3. Step 3: Cross multiply
    1,999.67x = 2,759.52 × 1,160.54
  4. Step 4: Simplify right side
    1,999.67x = 3,202,533.34
  5. Step 5: Solve for x
    x = 3,202,533.34/1,999.67
  6. Step 6: Final answer
    x = 1,601.53

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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.