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Finding the Fourth Proportional to 8,665.63, 13,001.46 and 2,822.20

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Solution

The fourth proportional to 8,665.63, 13,001.46 and 2,822.20 is: 4,234.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,665.63 : 13,001.46 = 2,822.20 : x
  2. Step 2: Convert to fraction form
    8,665.63/13,001.46 = 2,822.20/x
  3. Step 3: Cross multiply
    8,665.63x = 13,001.46 × 2,822.20
  4. Step 4: Simplify right side
    8,665.63x = 36,692,720.41
  5. Step 5: Solve for x
    x = 36,692,720.41/8,665.63
  6. Step 6: Final answer
    x = 4,234.28

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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.