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Finding the Fourth Proportional to 8,896.50, 12,277.90 and 5,171.22

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Solution

The fourth proportional to 8,896.50, 12,277.90 and 5,171.22 is: 7,136.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,896.50 : 12,277.90 = 5,171.22 : x
  2. Step 2: Convert to fraction form
    8,896.50/12,277.90 = 5,171.22/x
  3. Step 3: Cross multiply
    8,896.50x = 12,277.90 × 5,171.22
  4. Step 4: Simplify right side
    8,896.50x = 63,491,722.04
  5. Step 5: Solve for x
    x = 63,491,722.04/8,896.50
  6. Step 6: Final answer
    x = 7,136.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.