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Finding the Fourth Proportional to 8,798.65, 12,142.09 and 4,819.79

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Solution

The fourth proportional to 8,798.65, 12,142.09 and 4,819.79 is: 6,651.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,798.65 : 12,142.09 = 4,819.79 : x
  2. Step 2: Convert to fraction form
    8,798.65/12,142.09 = 4,819.79/x
  3. Step 3: Cross multiply
    8,798.65x = 12,142.09 × 4,819.79
  4. Step 4: Simplify right side
    8,798.65x = 58,522,323.96
  5. Step 5: Solve for x
    x = 58,522,323.96/8,798.65
  6. Step 6: Final answer
    x = 6,651.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.