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Finding the Fourth Proportional to 3,772.15, 5,656.15 and 2,019.21

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Solution

The fourth proportional to 3,772.15, 5,656.15 and 2,019.21 is: 3,027.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,772.15 : 5,656.15 = 2,019.21 : x
  2. Step 2: Convert to fraction form
    3,772.15/5,656.15 = 2,019.21/x
  3. Step 3: Cross multiply
    3,772.15x = 5,656.15 × 2,019.21
  4. Step 4: Simplify right side
    3,772.15x = 11,420,954.64
  5. Step 5: Solve for x
    x = 11,420,954.64/3,772.15
  6. Step 6: Final answer
    x = 3,027.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.