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Finding the Fourth Proportional to 3,579.70, 4,940.13 and 2,007.70

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Solution

The fourth proportional to 3,579.70, 4,940.13 and 2,007.70 is: 2,770.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,579.70 : 4,940.13 = 2,007.70 : x
  2. Step 2: Convert to fraction form
    3,579.70/4,940.13 = 2,007.70/x
  3. Step 3: Cross multiply
    3,579.70x = 4,940.13 × 2,007.70
  4. Step 4: Simplify right side
    3,579.70x = 9,918,299.00
  5. Step 5: Solve for x
    x = 9,918,299.00/3,579.70
  6. Step 6: Final answer
    x = 2,770.71

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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.