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Finding the Fourth Proportional to 2,759.82, 3,809.01 and 1,580.87

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Solution

The fourth proportional to 2,759.82, 3,809.01 and 1,580.87 is: 2,181.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,759.82 : 3,809.01 = 1,580.87 : x
  2. Step 2: Convert to fraction form
    2,759.82/3,809.01 = 1,580.87/x
  3. Step 3: Cross multiply
    2,759.82x = 3,809.01 × 1,580.87
  4. Step 4: Simplify right side
    2,759.82x = 6,021,530.59
  5. Step 5: Solve for x
    x = 6,021,530.59/2,759.82
  6. Step 6: Final answer
    x = 2,181.86

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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.