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Finding the Fourth Proportional to 8,630.75, 12,939.09 and 2,704.59

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Solution

The fourth proportional to 8,630.75, 12,939.09 and 2,704.59 is: 4,054.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,630.75 : 12,939.09 = 2,704.59 : x
  2. Step 2: Convert to fraction form
    8,630.75/12,939.09 = 2,704.59/x
  3. Step 3: Cross multiply
    8,630.75x = 12,939.09 × 2,704.59
  4. Step 4: Simplify right side
    8,630.75x = 34,994,933.42
  5. Step 5: Solve for x
    x = 34,994,933.42/8,630.75
  6. Step 6: Final answer
    x = 4,054.68

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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.