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Finding the Fourth Proportional to 8,415.92, 11,613.80 and 4,879.04

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Solution

The fourth proportional to 8,415.92, 11,613.80 and 4,879.04 is: 6,732.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,415.92 : 11,613.80 = 4,879.04 : x
  2. Step 2: Convert to fraction form
    8,415.92/11,613.80 = 4,879.04/x
  3. Step 3: Cross multiply
    8,415.92x = 11,613.80 × 4,879.04
  4. Step 4: Simplify right side
    8,415.92x = 56,664,194.75
  5. Step 5: Solve for x
    x = 56,664,194.75/8,415.92
  6. Step 6: Final answer
    x = 6,732.98

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.