Home / 7,878.24-11,819.39-2,331.81

Finding the Fourth Proportional to 7,878.24, 11,819.39 and 2,331.81

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Solution

The fourth proportional to 7,878.24, 11,819.39 and 2,331.81 is: 3,498.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,878.24 : 11,819.39 = 2,331.81 : x
  2. Step 2: Convert to fraction form
    7,878.24/11,819.39 = 2,331.81/x
  3. Step 3: Cross multiply
    7,878.24x = 11,819.39 × 2,331.81
  4. Step 4: Simplify right side
    7,878.24x = 27,560,560.14
  5. Step 5: Solve for x
    x = 27,560,560.14/7,878.24
  6. Step 6: Final answer
    x = 3,498.31

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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.