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Finding the Fourth Proportional to 8,463.12, 12,694.20 and 2,620.20

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Solution

The fourth proportional to 8,463.12, 12,694.20 and 2,620.20 is: 3,930.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,463.12 : 12,694.20 = 2,620.20 : x
  2. Step 2: Convert to fraction form
    8,463.12/12,694.20 = 2,620.20/x
  3. Step 3: Cross multiply
    8,463.12x = 12,694.20 × 2,620.20
  4. Step 4: Simplify right side
    8,463.12x = 33,261,342.84
  5. Step 5: Solve for x
    x = 33,261,342.84/8,463.12
  6. Step 6: Final answer
    x = 3,930.15

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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.