Home / 8,198.25-11,309.54-5,172

Finding the Fourth Proportional to 8,198.25, 11,309.54 and 5,172

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Solution

The fourth proportional to 8,198.25, 11,309.54 and 5,172 is: 7,134.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,198.25 : 11,309.54 = 5,172 : x
  2. Step 2: Convert to fraction form
    8,198.25/11,309.54 = 5,172/x
  3. Step 3: Cross multiply
    8,198.25x = 11,309.54 × 5,172
  4. Step 4: Simplify right side
    8,198.25x = 58,492,915.02
  5. Step 5: Solve for x
    x = 58,492,915.02/8,198.25
  6. Step 6: Final answer
    x = 7,134.80

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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.