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Finding the Fourth Proportional to 5,309.82, 7,327.39 and 2,919.79

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Solution

The fourth proportional to 5,309.82, 7,327.39 and 2,919.79 is: 4,029.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,309.82 : 7,327.39 = 2,919.79 : x
  2. Step 2: Convert to fraction form
    5,309.82/7,327.39 = 2,919.79/x
  3. Step 3: Cross multiply
    5,309.82x = 7,327.39 × 2,919.79
  4. Step 4: Simplify right side
    5,309.82x = 21,394,441.91
  5. Step 5: Solve for x
    x = 21,394,441.91/5,309.82
  6. Step 6: Final answer
    x = 4,029.22

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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.