Home / 7,819.93-11,728.49-3,869.91

Finding the Fourth Proportional to 7,819.93, 11,728.49 and 3,869.91

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Solution

The fourth proportional to 7,819.93, 11,728.49 and 3,869.91 is: 5,804.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,819.93 : 11,728.49 = 3,869.91 : x
  2. Step 2: Convert to fraction form
    7,819.93/11,728.49 = 3,869.91/x
  3. Step 3: Cross multiply
    7,819.93x = 11,728.49 × 3,869.91
  4. Step 4: Simplify right side
    7,819.93x = 45,388,200.74
  5. Step 5: Solve for x
    x = 45,388,200.74/7,819.93
  6. Step 6: Final answer
    x = 5,804.17

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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.