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Finding the Fourth Proportional to 7,216.75, 10,825.11 and 3,922.91

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Solution

The fourth proportional to 7,216.75, 10,825.11 and 3,922.91 is: 5,884.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,216.75 : 10,825.11 = 3,922.91 : x
  2. Step 2: Convert to fraction form
    7,216.75/10,825.11 = 3,922.91/x
  3. Step 3: Cross multiply
    7,216.75x = 10,825.11 × 3,922.91
  4. Step 4: Simplify right side
    7,216.75x = 42,465,979.63
  5. Step 5: Solve for x
    x = 42,465,979.63/7,216.75
  6. Step 6: Final answer
    x = 5,884.37

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1.5x scale

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.