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Finding the Fourth Proportional to 8,327.70, 12,491.46 and 2,171.70

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Solution

The fourth proportional to 8,327.70, 12,491.46 and 2,171.70 is: 3,257.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,327.70 : 12,491.46 = 2,171.70 : x
  2. Step 2: Convert to fraction form
    8,327.70/12,491.46 = 2,171.70/x
  3. Step 3: Cross multiply
    8,327.70x = 12,491.46 × 2,171.70
  4. Step 4: Simplify right side
    8,327.70x = 27,127,703.68
  5. Step 5: Solve for x
    x = 27,127,703.68/8,327.70
  6. Step 6: Final answer
    x = 3,257.53

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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.