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Finding the Fourth Proportional to 6,874.50, 9,489.15 and 4,634.94

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Solution

The fourth proportional to 6,874.50, 9,489.15 and 4,634.94 is: 6,397.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,874.50 : 9,489.15 = 4,634.94 : x
  2. Step 2: Convert to fraction form
    6,874.50/9,489.15 = 4,634.94/x
  3. Step 3: Cross multiply
    6,874.50x = 9,489.15 × 4,634.94
  4. Step 4: Simplify right side
    6,874.50x = 43,981,640.90
  5. Step 5: Solve for x
    x = 43,981,640.90/6,874.50
  6. Step 6: Final answer
    x = 6,397.79

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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.