Home / 7,947.96-11,921.82-2,753.88

Finding the Fourth Proportional to 7,947.96, 11,921.82 and 2,753.88

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Solution

The fourth proportional to 7,947.96, 11,921.82 and 2,753.88 is: 4,130.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,947.96 : 11,921.82 = 2,753.88 : x
  2. Step 2: Convert to fraction form
    7,947.96/11,921.82 = 2,753.88/x
  3. Step 3: Cross multiply
    7,947.96x = 11,921.82 × 2,753.88
  4. Step 4: Simplify right side
    7,947.96x = 32,831,261.66
  5. Step 5: Solve for x
    x = 32,831,261.66/7,947.96
  6. Step 6: Final answer
    x = 4,130.78

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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.