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Finding the Fourth Proportional to 7,137.72, 9,849.63 and 3,950.82

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Solution

The fourth proportional to 7,137.72, 9,849.63 and 3,950.82 is: 5,451.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,137.72 : 9,849.63 = 3,950.82 : x
  2. Step 2: Convert to fraction form
    7,137.72/9,849.63 = 3,950.82/x
  3. Step 3: Cross multiply
    7,137.72x = 9,849.63 × 3,950.82
  4. Step 4: Simplify right side
    7,137.72x = 38,914,115.20
  5. Step 5: Solve for x
    x = 38,914,115.20/7,137.72
  6. Step 6: Final answer
    x = 5,451.90

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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.