Home / 3,742.20-5,164.20-2,148.78

Finding the Fourth Proportional to 3,742.20, 5,164.20 and 2,148.78

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Solution

The fourth proportional to 3,742.20, 5,164.20 and 2,148.78 is: 2,965.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,742.20 : 5,164.20 = 2,148.78 : x
  2. Step 2: Convert to fraction form
    3,742.20/5,164.20 = 2,148.78/x
  3. Step 3: Cross multiply
    3,742.20x = 5,164.20 × 2,148.78
  4. Step 4: Simplify right side
    3,742.20x = 11,096,729.68
  5. Step 5: Solve for x
    x = 11,096,729.68/3,742.20
  6. Step 6: Final answer
    x = 2,965.30

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.