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Finding the Fourth Proportional to 8,600.74, 11,895.21 and 7,716.22

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Solution

The fourth proportional to 8,600.74, 11,895.21 and 7,716.22 is: 10,671.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,600.74 : 11,895.21 = 7,716.22 : x
  2. Step 2: Convert to fraction form
    8,600.74/11,895.21 = 7,716.22/x
  3. Step 3: Cross multiply
    8,600.74x = 11,895.21 × 7,716.22
  4. Step 4: Simplify right side
    8,600.74x = 91,786,057.31
  5. Step 5: Solve for x
    x = 91,786,057.31/8,600.74
  6. Step 6: Final answer
    x = 10,671.88

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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.