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Finding the Fourth Proportional to 2,608.98, 3,906.63 and 1,788.85

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Solution

The fourth proportional to 2,608.98, 3,906.63 and 1,788.85 is: 2,678.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,608.98 : 3,906.63 = 1,788.85 : x
  2. Step 2: Convert to fraction form
    2,608.98/3,906.63 = 1,788.85/x
  3. Step 3: Cross multiply
    2,608.98x = 3,906.63 × 1,788.85
  4. Step 4: Simplify right side
    2,608.98x = 6,988,379.96
  5. Step 5: Solve for x
    x = 6,988,379.96/2,608.98
  6. Step 6: Final answer
    x = 2,678.59

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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.