Home / 3,942.64-5,435.18-3,101.88

Finding the Fourth Proportional to 3,942.64, 5,435.18 and 3,101.88

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Solution

The fourth proportional to 3,942.64, 5,435.18 and 3,101.88 is: 4,276.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.64 : 5,435.18 = 3,101.88 : x
  2. Step 2: Convert to fraction form
    3,942.64/5,435.18 = 3,101.88/x
  3. Step 3: Cross multiply
    3,942.64x = 5,435.18 × 3,101.88
  4. Step 4: Simplify right side
    3,942.64x = 16,859,283.89
  5. Step 5: Solve for x
    x = 16,859,283.89/3,942.64
  6. Step 6: Final answer
    x = 4,276.15

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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.