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Finding the Fourth Proportional to 8,798.70, 13,135.14 and 8,491.02

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Solution

The fourth proportional to 8,798.70, 13,135.14 and 8,491.02 is: 12,675.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,798.70 : 13,135.14 = 8,491.02 : x
  2. Step 2: Convert to fraction form
    8,798.70/13,135.14 = 8,491.02/x
  3. Step 3: Cross multiply
    8,798.70x = 13,135.14 × 8,491.02
  4. Step 4: Simplify right side
    8,798.70x = 111,530,736.44
  5. Step 5: Solve for x
    x = 111,530,736.44/8,798.70
  6. Step 6: Final answer
    x = 12,675.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.