Home / 8,226.40-12,340.62-2,680.30

Finding the Fourth Proportional to 8,226.40, 12,340.62 and 2,680.30

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Solution

The fourth proportional to 8,226.40, 12,340.62 and 2,680.30 is: 4,020.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,226.40 : 12,340.62 = 2,680.30 : x
  2. Step 2: Convert to fraction form
    8,226.40/12,340.62 = 2,680.30/x
  3. Step 3: Cross multiply
    8,226.40x = 12,340.62 × 2,680.30
  4. Step 4: Simplify right side
    8,226.40x = 33,076,563.79
  5. Step 5: Solve for x
    x = 33,076,563.79/8,226.40
  6. Step 6: Final answer
    x = 4,020.78

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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.