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Finding the Fourth Proportional to 8,680.62, 13,018.24 and 3,133.24

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Solution

The fourth proportional to 8,680.62, 13,018.24 and 3,133.24 is: 4,698.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.62 : 13,018.24 = 3,133.24 : x
  2. Step 2: Convert to fraction form
    8,680.62/13,018.24 = 3,133.24/x
  3. Step 3: Cross multiply
    8,680.62x = 13,018.24 × 3,133.24
  4. Step 4: Simplify right side
    8,680.62x = 40,789,270.30
  5. Step 5: Solve for x
    x = 40,789,270.30/8,680.62
  6. Step 6: Final answer
    x = 4,698.89

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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.