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Finding the Fourth Proportional to 6,982.50, 9,635.87 and 3,838.71

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Solution

The fourth proportional to 6,982.50, 9,635.87 and 3,838.71 is: 5,297.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,982.50 : 9,635.87 = 3,838.71 : x
  2. Step 2: Convert to fraction form
    6,982.50/9,635.87 = 3,838.71/x
  3. Step 3: Cross multiply
    6,982.50x = 9,635.87 × 3,838.71
  4. Step 4: Simplify right side
    6,982.50x = 36,989,310.53
  5. Step 5: Solve for x
    x = 36,989,310.53/6,982.50
  6. Step 6: Final answer
    x = 5,297.43

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1.5x scale

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.