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Finding the Fourth Proportional to 8,265.94, 12,383.86 and 7,380.21

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Solution

The fourth proportional to 8,265.94, 12,383.86 and 7,380.21 is: 11,056.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,265.94 : 12,383.86 = 7,380.21 : x
  2. Step 2: Convert to fraction form
    8,265.94/12,383.86 = 7,380.21/x
  3. Step 3: Cross multiply
    8,265.94x = 12,383.86 × 7,380.21
  4. Step 4: Simplify right side
    8,265.94x = 91,395,487.41
  5. Step 5: Solve for x
    x = 91,395,487.41/8,265.94
  6. Step 6: Final answer
    x = 11,056.88

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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.