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Finding the Fourth Proportional to 6,896.87, 9,517.30 and 3,913.66

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Solution

The fourth proportional to 6,896.87, 9,517.30 and 3,913.66 is: 5,400.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,896.87 : 9,517.30 = 3,913.66 : x
  2. Step 2: Convert to fraction form
    6,896.87/9,517.30 = 3,913.66/x
  3. Step 3: Cross multiply
    6,896.87x = 9,517.30 × 3,913.66
  4. Step 4: Simplify right side
    6,896.87x = 37,247,442.74
  5. Step 5: Solve for x
    x = 37,247,442.74/6,896.87
  6. Step 6: Final answer
    x = 5,400.63

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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.