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Finding the Fourth Proportional to 8,227.77, 12,330.27 and 7,129.41

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Solution

The fourth proportional to 8,227.77, 12,330.27 and 7,129.41 is: 10,684.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,227.77 : 12,330.27 = 7,129.41 : x
  2. Step 2: Convert to fraction form
    8,227.77/12,330.27 = 7,129.41/x
  3. Step 3: Cross multiply
    8,227.77x = 12,330.27 × 7,129.41
  4. Step 4: Simplify right side
    8,227.77x = 87,907,550.24
  5. Step 5: Solve for x
    x = 87,907,550.24/8,227.77
  6. Step 6: Final answer
    x = 10,684.25

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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.