Home / 3,765.55-5,196.09-2,172.46

Finding the Fourth Proportional to 3,765.55, 5,196.09 and 2,172.46

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Solution

The fourth proportional to 3,765.55, 5,196.09 and 2,172.46 is: 2,997.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,765.55 : 5,196.09 = 2,172.46 : x
  2. Step 2: Convert to fraction form
    3,765.55/5,196.09 = 2,172.46/x
  3. Step 3: Cross multiply
    3,765.55x = 5,196.09 × 2,172.46
  4. Step 4: Simplify right side
    3,765.55x = 11,288,297.68
  5. Step 5: Solve for x
    x = 11,288,297.68/3,765.55
  6. Step 6: Final answer
    x = 2,997.78

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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.