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Finding the Fourth Proportional to 8,642.44, 12,961.74 and 3,446.92

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Solution

The fourth proportional to 8,642.44, 12,961.74 and 3,446.92 is: 5,169.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,642.44 : 12,961.74 = 3,446.92 : x
  2. Step 2: Convert to fraction form
    8,642.44/12,961.74 = 3,446.92/x
  3. Step 3: Cross multiply
    8,642.44x = 12,961.74 × 3,446.92
  4. Step 4: Simplify right side
    8,642.44x = 44,678,080.84
  5. Step 5: Solve for x
    x = 44,678,080.84/8,642.44
  6. Step 6: Final answer
    x = 5,169.61

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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.