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Finding the Fourth Proportional to 1,805.82, 2,703.21 and 1,188.30

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Solution

The fourth proportional to 1,805.82, 2,703.21 and 1,188.30 is: 1,778.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,805.82 : 2,703.21 = 1,188.30 : x
  2. Step 2: Convert to fraction form
    1,805.82/2,703.21 = 1,188.30/x
  3. Step 3: Cross multiply
    1,805.82x = 2,703.21 × 1,188.30
  4. Step 4: Simplify right side
    1,805.82x = 3,212,224.44
  5. Step 5: Solve for x
    x = 3,212,224.44/1,805.82
  6. Step 6: Final answer
    x = 1,778.82

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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.