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Finding the Fourth Proportional to 8,857.70, 12,224.97 and 6,729.74

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Solution

The fourth proportional to 8,857.70, 12,224.97 and 6,729.74 is: 9,288.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,857.70 : 12,224.97 = 6,729.74 : x
  2. Step 2: Convert to fraction form
    8,857.70/12,224.97 = 6,729.74/x
  3. Step 3: Cross multiply
    8,857.70x = 12,224.97 × 6,729.74
  4. Step 4: Simplify right side
    8,857.70x = 82,270,869.61
  5. Step 5: Solve for x
    x = 82,270,869.61/8,857.70
  6. Step 6: Final answer
    x = 9,288.06

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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.