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Finding the Fourth Proportional to 8,380.52, 12,570.79 and 3,446.71

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Solution

The fourth proportional to 8,380.52, 12,570.79 and 3,446.71 is: 5,170.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,380.52 : 12,570.79 = 3,446.71 : x
  2. Step 2: Convert to fraction form
    8,380.52/12,570.79 = 3,446.71/x
  3. Step 3: Cross multiply
    8,380.52x = 12,570.79 × 3,446.71
  4. Step 4: Simplify right side
    8,380.52x = 43,327,867.60
  5. Step 5: Solve for x
    x = 43,327,867.60/8,380.52
  6. Step 6: Final answer
    x = 5,170.07

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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.