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Finding the Fourth Proportional to 6,247.40, 8,621.64 and 3,414.97

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Solution

The fourth proportional to 6,247.40, 8,621.64 and 3,414.97 is: 4,712.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,247.40 : 8,621.64 = 3,414.97 : x
  2. Step 2: Convert to fraction form
    6,247.40/8,621.64 = 3,414.97/x
  3. Step 3: Cross multiply
    6,247.40x = 8,621.64 × 3,414.97
  4. Step 4: Simplify right side
    6,247.40x = 29,442,613.84
  5. Step 5: Solve for x
    x = 29,442,613.84/6,247.40
  6. Step 6: Final answer
    x = 4,712.78

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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.