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Finding the Fourth Proportional to 8,518.65, 12,790.23 and 6,181.29

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Solution

The fourth proportional to 8,518.65, 12,790.23 and 6,181.29 is: 9,280.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,518.65 : 12,790.23 = 6,181.29 : x
  2. Step 2: Convert to fraction form
    8,518.65/12,790.23 = 6,181.29/x
  3. Step 3: Cross multiply
    8,518.65x = 12,790.23 × 6,181.29
  4. Step 4: Simplify right side
    8,518.65x = 79,060,120.80
  5. Step 5: Solve for x
    x = 79,060,120.80/8,518.65
  6. Step 6: Final answer
    x = 9,280.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.