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Finding the Fourth Proportional to 3,913.65, 5,400.27 and 2,234.79

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Solution

The fourth proportional to 3,913.65, 5,400.27 and 2,234.79 is: 3,083.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.65 : 5,400.27 = 2,234.79 : x
  2. Step 2: Convert to fraction form
    3,913.65/5,400.27 = 2,234.79/x
  3. Step 3: Cross multiply
    3,913.65x = 5,400.27 × 2,234.79
  4. Step 4: Simplify right side
    3,913.65x = 12,068,469.39
  5. Step 5: Solve for x
    x = 12,068,469.39/3,913.65
  6. Step 6: Final answer
    x = 3,083.69

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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.