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Finding the Fourth Proportional to 8,169.74, 12,256.20 and 2,622.66

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Solution

The fourth proportional to 8,169.74, 12,256.20 and 2,622.66 is: 3,934.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,169.74 : 12,256.20 = 2,622.66 : x
  2. Step 2: Convert to fraction form
    8,169.74/12,256.20 = 2,622.66/x
  3. Step 3: Cross multiply
    8,169.74x = 12,256.20 × 2,622.66
  4. Step 4: Simplify right side
    8,169.74x = 32,143,845.49
  5. Step 5: Solve for x
    x = 32,143,845.49/8,169.74
  6. Step 6: Final answer
    x = 3,934.50

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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.