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Finding the Fourth Proportional to 7,183.69, 9,913.39 and 3,996.84

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Solution

The fourth proportional to 7,183.69, 9,913.39 and 3,996.84 is: 5,515.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,183.69 : 9,913.39 = 3,996.84 : x
  2. Step 2: Convert to fraction form
    7,183.69/9,913.39 = 3,996.84/x
  3. Step 3: Cross multiply
    7,183.69x = 9,913.39 × 3,996.84
  4. Step 4: Simplify right side
    7,183.69x = 39,622,260.87
  5. Step 5: Solve for x
    x = 39,622,260.87/7,183.69
  6. Step 6: Final answer
    x = 5,515.59

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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.