Home / 7,878.17-11,819.55-2,331.66

Finding the Fourth Proportional to 7,878.17, 11,819.55 and 2,331.66

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Solution

The fourth proportional to 7,878.17, 11,819.55 and 2,331.66 is: 3,498.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,878.17 : 11,819.55 = 2,331.66 : x
  2. Step 2: Convert to fraction form
    7,878.17/11,819.55 = 2,331.66/x
  3. Step 3: Cross multiply
    7,878.17x = 11,819.55 × 2,331.66
  4. Step 4: Simplify right side
    7,878.17x = 27,559,171.95
  5. Step 5: Solve for x
    x = 27,559,171.95/7,878.17
  6. Step 6: Final answer
    x = 3,498.17

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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.