Home / 2,125.82-3,189.60-1,691.66

Finding the Fourth Proportional to 2,125.82, 3,189.60 and 1,691.66

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Solution

The fourth proportional to 2,125.82, 3,189.60 and 1,691.66 is: 2,538.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.82 : 3,189.60 = 1,691.66 : x
  2. Step 2: Convert to fraction form
    2,125.82/3,189.60 = 1,691.66/x
  3. Step 3: Cross multiply
    2,125.82x = 3,189.60 × 1,691.66
  4. Step 4: Simplify right side
    2,125.82x = 5,395,702.79
  5. Step 5: Solve for x
    x = 5,395,702.79/2,125.82
  6. Step 6: Final answer
    x = 2,538.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.