Home / 7,878.45-11,819.97-2,331.93

Finding the Fourth Proportional to 7,878.45, 11,819.97 and 2,331.93

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Solution

The fourth proportional to 7,878.45, 11,819.97 and 2,331.93 is: 3,498.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,878.45 : 11,819.97 = 2,331.93 : x
  2. Step 2: Convert to fraction form
    7,878.45/11,819.97 = 2,331.93/x
  3. Step 3: Cross multiply
    7,878.45x = 11,819.97 × 2,331.93
  4. Step 4: Simplify right side
    7,878.45x = 27,563,342.64
  5. Step 5: Solve for x
    x = 27,563,342.64/7,878.45
  6. Step 6: Final answer
    x = 3,498.57

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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.