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Finding the Fourth Proportional to 8,951.92, 12,343.69 and 6,119.75

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Solution

The fourth proportional to 8,951.92, 12,343.69 and 6,119.75 is: 8,438.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,951.92 : 12,343.69 = 6,119.75 : x
  2. Step 2: Convert to fraction form
    8,951.92/12,343.69 = 6,119.75/x
  3. Step 3: Cross multiply
    8,951.92x = 12,343.69 × 6,119.75
  4. Step 4: Simplify right side
    8,951.92x = 75,540,335.39
  5. Step 5: Solve for x
    x = 75,540,335.39/8,951.92
  6. Step 6: Final answer
    x = 8,438.45

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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.