Home / 7,855.96-11,787.78-3,696.38

Finding the Fourth Proportional to 7,855.96, 11,787.78 and 3,696.38

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Solution

The fourth proportional to 7,855.96, 11,787.78 and 3,696.38 is: 5,546.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,855.96 : 11,787.78 = 3,696.38 : x
  2. Step 2: Convert to fraction form
    7,855.96/11,787.78 = 3,696.38/x
  3. Step 3: Cross multiply
    7,855.96x = 11,787.78 × 3,696.38
  4. Step 4: Simplify right side
    7,855.96x = 43,572,158.88
  5. Step 5: Solve for x
    x = 43,572,158.88/7,855.96
  6. Step 6: Final answer
    x = 5,546.38

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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.