Home / 7,819.43-11,727.75-3,869.42

Finding the Fourth Proportional to 7,819.43, 11,727.75 and 3,869.42

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Solution

The fourth proportional to 7,819.43, 11,727.75 and 3,869.42 is: 5,803.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,819.43 : 11,727.75 = 3,869.42 : x
  2. Step 2: Convert to fraction form
    7,819.43/11,727.75 = 3,869.42/x
  3. Step 3: Cross multiply
    7,819.43x = 11,727.75 × 3,869.42
  4. Step 4: Simplify right side
    7,819.43x = 45,379,512.42
  5. Step 5: Solve for x
    x = 45,379,512.42/7,819.43
  6. Step 6: Final answer
    x = 5,803.43

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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.