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Finding the Fourth Proportional to 8,512.84, 12,763.10 and 2,666.28

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Solution

The fourth proportional to 8,512.84, 12,763.10 and 2,666.28 is: 3,997.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,512.84 : 12,763.10 = 2,666.28 : x
  2. Step 2: Convert to fraction form
    8,512.84/12,763.10 = 2,666.28/x
  3. Step 3: Cross multiply
    8,512.84x = 12,763.10 × 2,666.28
  4. Step 4: Simplify right side
    8,512.84x = 34,029,998.27
  5. Step 5: Solve for x
    x = 34,029,998.27/8,512.84
  6. Step 6: Final answer
    x = 3,997.49

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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.