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Finding the Fourth Proportional to 8,515.97, 11,753.67 and 4,789.97

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Solution

The fourth proportional to 8,515.97, 11,753.67 and 4,789.97 is: 6,611.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,515.97 : 11,753.67 = 4,789.97 : x
  2. Step 2: Convert to fraction form
    8,515.97/11,753.67 = 4,789.97/x
  3. Step 3: Cross multiply
    8,515.97x = 11,753.67 × 4,789.97
  4. Step 4: Simplify right side
    8,515.97x = 56,299,729.96
  5. Step 5: Solve for x
    x = 56,299,729.96/8,515.97
  6. Step 6: Final answer
    x = 6,611.08

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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.