Home / 7,947.38-11,915.79-3,788.03

Finding the Fourth Proportional to 7,947.38, 11,915.79 and 3,788.03

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Solution

The fourth proportional to 7,947.38, 11,915.79 and 3,788.03 is: 5,679.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,947.38 : 11,915.79 = 3,788.03 : x
  2. Step 2: Convert to fraction form
    7,947.38/11,915.79 = 3,788.03/x
  3. Step 3: Cross multiply
    7,947.38x = 11,915.79 × 3,788.03
  4. Step 4: Simplify right side
    7,947.38x = 45,137,369.99
  5. Step 5: Solve for x
    x = 45,137,369.99/7,947.38
  6. Step 6: Final answer
    x = 5,679.53

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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.