Home / 7,986.78-11,940.75-6,767.82

Finding the Fourth Proportional to 7,986.78, 11,940.75 and 6,767.82

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Solution

The fourth proportional to 7,986.78, 11,940.75 and 6,767.82 is: 10,118.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.78 : 11,940.75 = 6,767.82 : x
  2. Step 2: Convert to fraction form
    7,986.78/11,940.75 = 6,767.82/x
  3. Step 3: Cross multiply
    7,986.78x = 11,940.75 × 6,767.82
  4. Step 4: Simplify right side
    7,986.78x = 80,812,846.67
  5. Step 5: Solve for x
    x = 80,812,846.67/7,986.78
  6. Step 6: Final answer
    x = 10,118.33

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1.5x scale

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.