Home / 3,421.64-5,132.46-1,961.72

Finding the Fourth Proportional to 3,421.64, 5,132.46 and 1,961.72

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Solution

The fourth proportional to 3,421.64, 5,132.46 and 1,961.72 is: 2,942.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.64 : 5,132.46 = 1,961.72 : x
  2. Step 2: Convert to fraction form
    3,421.64/5,132.46 = 1,961.72/x
  3. Step 3: Cross multiply
    3,421.64x = 5,132.46 × 1,961.72
  4. Step 4: Simplify right side
    3,421.64x = 10,068,449.43
  5. Step 5: Solve for x
    x = 10,068,449.43/3,421.64
  6. Step 6: Final answer
    x = 2,942.58

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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.