Home / 8,131.73-11,220.27-5,145.47

Finding the Fourth Proportional to 8,131.73, 11,220.27 and 5,145.47

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Solution

The fourth proportional to 8,131.73, 11,220.27 and 5,145.47 is: 7,099.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,131.73 : 11,220.27 = 5,145.47 : x
  2. Step 2: Convert to fraction form
    8,131.73/11,220.27 = 5,145.47/x
  3. Step 3: Cross multiply
    8,131.73x = 11,220.27 × 5,145.47
  4. Step 4: Simplify right side
    8,131.73x = 57,733,562.68
  5. Step 5: Solve for x
    x = 57,733,562.68/8,131.73
  6. Step 6: Final answer
    x = 7,099.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.