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Finding the Fourth Proportional to 8,491.34, 12,729.16 and 3,224.77

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Solution

The fourth proportional to 8,491.34, 12,729.16 and 3,224.77 is: 4,834.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,491.34 : 12,729.16 = 3,224.77 : x
  2. Step 2: Convert to fraction form
    8,491.34/12,729.16 = 3,224.77/x
  3. Step 3: Cross multiply
    8,491.34x = 12,729.16 × 3,224.77
  4. Step 4: Simplify right side
    8,491.34x = 41,048,613.29
  5. Step 5: Solve for x
    x = 41,048,613.29/8,491.34
  6. Step 6: Final answer
    x = 4,834.17

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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.