Home / 7,857.28-11,786.73-2,663.56

Finding the Fourth Proportional to 7,857.28, 11,786.73 and 2,663.56

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Solution

The fourth proportional to 7,857.28, 11,786.73 and 2,663.56 is: 3,995.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,857.28 : 11,786.73 = 2,663.56 : x
  2. Step 2: Convert to fraction form
    7,857.28/11,786.73 = 2,663.56/x
  3. Step 3: Cross multiply
    7,857.28x = 11,786.73 × 2,663.56
  4. Step 4: Simplify right side
    7,857.28x = 31,394,662.56
  5. Step 5: Solve for x
    x = 31,394,662.56/7,857.28
  6. Step 6: Final answer
    x = 3,995.61

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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.