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Finding the Fourth Proportional to 6,458.58, 8,909.08 and 4,067.61

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Solution

The fourth proportional to 6,458.58, 8,909.08 and 4,067.61 is: 5,610.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,458.58 : 8,909.08 = 4,067.61 : x
  2. Step 2: Convert to fraction form
    6,458.58/8,909.08 = 4,067.61/x
  3. Step 3: Cross multiply
    6,458.58x = 8,909.08 × 4,067.61
  4. Step 4: Simplify right side
    6,458.58x = 36,238,662.90
  5. Step 5: Solve for x
    x = 36,238,662.90/6,458.58
  6. Step 6: Final answer
    x = 5,610.93

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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.