Home / 7,777.92-11,665.79-2,231.74

Finding the Fourth Proportional to 7,777.92, 11,665.79 and 2,231.74

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Solution

The fourth proportional to 7,777.92, 11,665.79 and 2,231.74 is: 3,347.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,777.92 : 11,665.79 = 2,231.74 : x
  2. Step 2: Convert to fraction form
    7,777.92/11,665.79 = 2,231.74/x
  3. Step 3: Cross multiply
    7,777.92x = 11,665.79 × 2,231.74
  4. Step 4: Simplify right side
    7,777.92x = 26,034,940.69
  5. Step 5: Solve for x
    x = 26,034,940.69/7,777.92
  6. Step 6: Final answer
    x = 3,347.29

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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.