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Finding the Fourth Proportional to 6,387.91, 8,813.97 and 4,028.68

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Solution

The fourth proportional to 6,387.91, 8,813.97 and 4,028.68 is: 5,558.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,387.91 : 8,813.97 = 4,028.68 : x
  2. Step 2: Convert to fraction form
    6,387.91/8,813.97 = 4,028.68/x
  3. Step 3: Cross multiply
    6,387.91x = 8,813.97 × 4,028.68
  4. Step 4: Simplify right side
    6,387.91x = 35,508,664.66
  5. Step 5: Solve for x
    x = 35,508,664.66/6,387.91
  6. Step 6: Final answer
    x = 5,558.73

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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.