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Finding the Fourth Proportional to 3,679.94, 5,078.20 and 2,001.30

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Solution

The fourth proportional to 3,679.94, 5,078.20 and 2,001.30 is: 2,761.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.94 : 5,078.20 = 2,001.30 : x
  2. Step 2: Convert to fraction form
    3,679.94/5,078.20 = 2,001.30/x
  3. Step 3: Cross multiply
    3,679.94x = 5,078.20 × 2,001.30
  4. Step 4: Simplify right side
    3,679.94x = 10,163,001.66
  5. Step 5: Solve for x
    x = 10,163,001.66/3,679.94
  6. Step 6: Final answer
    x = 2,761.73

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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.