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Finding the Fourth Proportional to 8,908.38, 12,282.57 and 7,313.22

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Solution

The fourth proportional to 8,908.38, 12,282.57 and 7,313.22 is: 10,083.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,908.38 : 12,282.57 = 7,313.22 : x
  2. Step 2: Convert to fraction form
    8,908.38/12,282.57 = 7,313.22/x
  3. Step 3: Cross multiply
    8,908.38x = 12,282.57 × 7,313.22
  4. Step 4: Simplify right side
    8,908.38x = 89,825,136.58
  5. Step 5: Solve for x
    x = 89,825,136.58/8,908.38
  6. Step 6: Final answer
    x = 10,083.22

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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.