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Finding the Fourth Proportional to 8,622.59, 12,939.56 and 4,729.73

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Solution

The fourth proportional to 8,622.59, 12,939.56 and 4,729.73 is: 7,097.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,622.59 : 12,939.56 = 4,729.73 : x
  2. Step 2: Convert to fraction form
    8,622.59/12,939.56 = 4,729.73/x
  3. Step 3: Cross multiply
    8,622.59x = 12,939.56 × 4,729.73
  4. Step 4: Simplify right side
    8,622.59x = 61,200,625.12
  5. Step 5: Solve for x
    x = 61,200,625.12/8,622.59
  6. Step 6: Final answer
    x = 7,097.71

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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.