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Finding the Fourth Proportional to 7,183.95, 9,913.97 and 3,997.50

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Solution

The fourth proportional to 7,183.95, 9,913.97 and 3,997.50 is: 5,516.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,183.95 : 9,913.97 = 3,997.50 : x
  2. Step 2: Convert to fraction form
    7,183.95/9,913.97 = 3,997.50/x
  3. Step 3: Cross multiply
    7,183.95x = 9,913.97 × 3,997.50
  4. Step 4: Simplify right side
    7,183.95x = 39,631,095.08
  5. Step 5: Solve for x
    x = 39,631,095.08/7,183.95
  6. Step 6: Final answer
    x = 5,516.62

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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.