Home / 7,956.78-11,921.49-4,260.75

Finding the Fourth Proportional to 7,956.78, 11,921.49 and 4,260.75

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Solution

The fourth proportional to 7,956.78, 11,921.49 and 4,260.75 is: 6,383.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,956.78 : 11,921.49 = 4,260.75 : x
  2. Step 2: Convert to fraction form
    7,956.78/11,921.49 = 4,260.75/x
  3. Step 3: Cross multiply
    7,956.78x = 11,921.49 × 4,260.75
  4. Step 4: Simplify right side
    7,956.78x = 50,794,488.52
  5. Step 5: Solve for x
    x = 50,794,488.52/7,956.78
  6. Step 6: Final answer
    x = 6,383.80

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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.