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Finding the Fourth Proportional to 8,649.57, 12,976.17 and 2,805.72

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Solution

The fourth proportional to 8,649.57, 12,976.17 and 2,805.72 is: 4,209.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,649.57 : 12,976.17 = 2,805.72 : x
  2. Step 2: Convert to fraction form
    8,649.57/12,976.17 = 2,805.72/x
  3. Step 3: Cross multiply
    8,649.57x = 12,976.17 × 2,805.72
  4. Step 4: Simplify right side
    8,649.57x = 36,407,499.69
  5. Step 5: Solve for x
    x = 36,407,499.69/8,649.57
  6. Step 6: Final answer
    x = 4,209.17

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