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Finding the Fourth Proportional to 8,321.16, 11,491.44 and 5,338.44

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Solution

The fourth proportional to 8,321.16, 11,491.44 and 5,338.44 is: 7,372.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,321.16 : 11,491.44 = 5,338.44 : x
  2. Step 2: Convert to fraction form
    8,321.16/11,491.44 = 5,338.44/x
  3. Step 3: Cross multiply
    8,321.16x = 11,491.44 × 5,338.44
  4. Step 4: Simplify right side
    8,321.16x = 61,346,362.95
  5. Step 5: Solve for x
    x = 61,346,362.95/8,321.16
  6. Step 6: Final answer
    x = 7,372.33

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1.5x scale

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.