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Finding the Fourth Proportional to 8,633, 12,949.62 and 3,086.70

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Solution

The fourth proportional to 8,633, 12,949.62 and 3,086.70 is: 4,630.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,633 : 12,949.62 = 3,086.70 : x
  2. Step 2: Convert to fraction form
    8,633/12,949.62 = 3,086.70/x
  3. Step 3: Cross multiply
    8,633x = 12,949.62 × 3,086.70
  4. Step 4: Simplify right side
    8,633x = 39,971,592.05
  5. Step 5: Solve for x
    x = 39,971,592.05/8,633
  6. Step 6: Final answer
    x = 4,630.09

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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.