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Finding the Fourth Proportional to 2,772.36, 3,822.42 and 1,722.60

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Solution

The fourth proportional to 2,772.36, 3,822.42 and 1,722.60 is: 2,375.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.36 : 3,822.42 = 1,722.60 : x
  2. Step 2: Convert to fraction form
    2,772.36/3,822.42 = 1,722.60/x
  3. Step 3: Cross multiply
    2,772.36x = 3,822.42 × 1,722.60
  4. Step 4: Simplify right side
    2,772.36x = 6,584,500.69
  5. Step 5: Solve for x
    x = 6,584,500.69/2,772.36
  6. Step 6: Final answer
    x = 2,375.05

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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.