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Finding the Fourth Proportional to 8,563.28, 11,817.84 and 4,786.64

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Solution

The fourth proportional to 8,563.28, 11,817.84 and 4,786.64 is: 6,605.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,563.28 : 11,817.84 = 4,786.64 : x
  2. Step 2: Convert to fraction form
    8,563.28/11,817.84 = 4,786.64/x
  3. Step 3: Cross multiply
    8,563.28x = 11,817.84 × 4,786.64
  4. Step 4: Simplify right side
    8,563.28x = 56,567,745.66
  5. Step 5: Solve for x
    x = 56,567,745.66/8,563.28
  6. Step 6: Final answer
    x = 6,605.85

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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.