Home / 2,630.97-3,947.61-1,398.09

Finding the Fourth Proportional to 2,630.97, 3,947.61 and 1,398.09

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Solution

The fourth proportional to 2,630.97, 3,947.61 and 1,398.09 is: 2,097.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,630.97 : 3,947.61 = 1,398.09 : x
  2. Step 2: Convert to fraction form
    2,630.97/3,947.61 = 1,398.09/x
  3. Step 3: Cross multiply
    2,630.97x = 3,947.61 × 1,398.09
  4. Step 4: Simplify right side
    2,630.97x = 5,519,114.06
  5. Step 5: Solve for x
    x = 5,519,114.06/2,630.97
  6. Step 6: Final answer
    x = 2,097.75

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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.