Home / 7,965.36-11,947.05-2,122.38

Finding the Fourth Proportional to 7,965.36, 11,947.05 and 2,122.38

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Solution

The fourth proportional to 7,965.36, 11,947.05 and 2,122.38 is: 3,183.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,965.36 : 11,947.05 = 2,122.38 : x
  2. Step 2: Convert to fraction form
    7,965.36/11,947.05 = 2,122.38/x
  3. Step 3: Cross multiply
    7,965.36x = 11,947.05 × 2,122.38
  4. Step 4: Simplify right side
    7,965.36x = 25,356,179.98
  5. Step 5: Solve for x
    x = 25,356,179.98/7,965.36
  6. Step 6: Final answer
    x = 3,183.31

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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.