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Finding the Fourth Proportional to 7,937.91, 11,906.78 and 4,818.78

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Solution

The fourth proportional to 7,937.91, 11,906.78 and 4,818.78 is: 7,228.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,937.91 : 11,906.78 = 4,818.78 : x
  2. Step 2: Convert to fraction form
    7,937.91/11,906.78 = 4,818.78/x
  3. Step 3: Cross multiply
    7,937.91x = 11,906.78 × 4,818.78
  4. Step 4: Simplify right side
    7,937.91x = 57,376,105.84
  5. Step 5: Solve for x
    x = 57,376,105.84/7,937.91
  6. Step 6: Final answer
    x = 7,228.12

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1.5x scale

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.