Home / 3,694.10-5,097.20-2,121.88

Finding the Fourth Proportional to 3,694.10, 5,097.20 and 2,121.88

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Solution

The fourth proportional to 3,694.10, 5,097.20 and 2,121.88 is: 2,927.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,694.10 : 5,097.20 = 2,121.88 : x
  2. Step 2: Convert to fraction form
    3,694.10/5,097.20 = 2,121.88/x
  3. Step 3: Cross multiply
    3,694.10x = 5,097.20 × 2,121.88
  4. Step 4: Simplify right side
    3,694.10x = 10,815,646.74
  5. Step 5: Solve for x
    x = 10,815,646.74/3,694.10
  6. Step 6: Final answer
    x = 2,927.82

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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.