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Finding the Fourth Proportional to 8,663, 12,995.31 and 2,818.04

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Solution

The fourth proportional to 8,663, 12,995.31 and 2,818.04 is: 4,227.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,663 : 12,995.31 = 2,818.04 : x
  2. Step 2: Convert to fraction form
    8,663/12,995.31 = 2,818.04/x
  3. Step 3: Cross multiply
    8,663x = 12,995.31 × 2,818.04
  4. Step 4: Simplify right side
    8,663x = 36,621,303.39
  5. Step 5: Solve for x
    x = 36,621,303.39/8,663
  6. Step 6: Final answer
    x = 4,227.32

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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.