Home / 7,183.59-9,912.71-3,996.78

Finding the Fourth Proportional to 7,183.59, 9,912.71 and 3,996.78

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Solution

The fourth proportional to 7,183.59, 9,912.71 and 3,996.78 is: 5,515.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,183.59 : 9,912.71 = 3,996.78 : x
  2. Step 2: Convert to fraction form
    7,183.59/9,912.71 = 3,996.78/x
  3. Step 3: Cross multiply
    7,183.59x = 9,912.71 × 3,996.78
  4. Step 4: Simplify right side
    7,183.59x = 39,618,931.07
  5. Step 5: Solve for x
    x = 39,618,931.07/7,183.59
  6. Step 6: Final answer
    x = 5,515.20

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Similar ratio
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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.