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Finding the Fourth Proportional to 9,371.22, 12,942.91 and 6,381.86

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Solution

The fourth proportional to 9,371.22, 12,942.91 and 6,381.86 is: 8,814.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,371.22 : 12,942.91 = 6,381.86 : x
  2. Step 2: Convert to fraction form
    9,371.22/12,942.91 = 6,381.86/x
  3. Step 3: Cross multiply
    9,371.22x = 12,942.91 × 6,381.86
  4. Step 4: Simplify right side
    9,371.22x = 82,599,839.61
  5. Step 5: Solve for x
    x = 82,599,839.61/9,371.22
  6. Step 6: Final answer
    x = 8,814.20

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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.