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Finding the Fourth Proportional to 8,660.49, 12,992.10 and 2,815.73

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Solution

The fourth proportional to 8,660.49, 12,992.10 and 2,815.73 is: 4,224.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,660.49 : 12,992.10 = 2,815.73 : x
  2. Step 2: Convert to fraction form
    8,660.49/12,992.10 = 2,815.73/x
  3. Step 3: Cross multiply
    8,660.49x = 12,992.10 × 2,815.73
  4. Step 4: Simplify right side
    8,660.49x = 36,582,231.65
  5. Step 5: Solve for x
    x = 36,582,231.65/8,660.49
  6. Step 6: Final answer
    x = 4,224.04

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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.