Home / 7,959.20-11,928.96-2,759

Finding the Fourth Proportional to 7,959.20, 11,928.96 and 2,759

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Solution

The fourth proportional to 7,959.20, 11,928.96 and 2,759 is: 4,135.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,959.20 : 11,928.96 = 2,759 : x
  2. Step 2: Convert to fraction form
    7,959.20/11,928.96 = 2,759/x
  3. Step 3: Cross multiply
    7,959.20x = 11,928.96 × 2,759
  4. Step 4: Simplify right side
    7,959.20x = 32,912,000.64
  5. Step 5: Solve for x
    x = 32,912,000.64/7,959.20
  6. Step 6: Final answer
    x = 4,135.09

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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.