Home / 7,040.62-9,715.97-3,896.87

Finding the Fourth Proportional to 7,040.62, 9,715.97 and 3,896.87

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Solution

The fourth proportional to 7,040.62, 9,715.97 and 3,896.87 is: 5,377.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,040.62 : 9,715.97 = 3,896.87 : x
  2. Step 2: Convert to fraction form
    7,040.62/9,715.97 = 3,896.87/x
  3. Step 3: Cross multiply
    7,040.62x = 9,715.97 × 3,896.87
  4. Step 4: Simplify right side
    7,040.62x = 37,861,852.53
  5. Step 5: Solve for x
    x = 37,861,852.53/7,040.62
  6. Step 6: Final answer
    x = 5,377.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.