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Finding the Fourth Proportional to 3,579.86, 4,940.80 and 2,008.46

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Solution

The fourth proportional to 3,579.86, 4,940.80 and 2,008.46 is: 2,772.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,579.86 : 4,940.80 = 2,008.46 : x
  2. Step 2: Convert to fraction form
    3,579.86/4,940.80 = 2,008.46/x
  3. Step 3: Cross multiply
    3,579.86x = 4,940.80 × 2,008.46
  4. Step 4: Simplify right side
    3,579.86x = 9,923,399.17
  5. Step 5: Solve for x
    x = 9,923,399.17/3,579.86
  6. Step 6: Final answer
    x = 2,772.01

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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.