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Finding the Fourth Proportional to 8,491.37, 12,732.96 and 3,559.68

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Solution

The fourth proportional to 8,491.37, 12,732.96 and 3,559.68 is: 5,337.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,491.37 : 12,732.96 = 3,559.68 : x
  2. Step 2: Convert to fraction form
    8,491.37/12,732.96 = 3,559.68/x
  3. Step 3: Cross multiply
    8,491.37x = 12,732.96 × 3,559.68
  4. Step 4: Simplify right side
    8,491.37x = 45,325,245.25
  5. Step 5: Solve for x
    x = 45,325,245.25/8,491.37
  6. Step 6: Final answer
    x = 5,337.80

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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.