Home / 2,972.70-4,097.39-2,086.97

Finding the Fourth Proportional to 2,972.70, 4,097.39 and 2,086.97

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Solution

The fourth proportional to 2,972.70, 4,097.39 and 2,086.97 is: 2,876.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.70 : 4,097.39 = 2,086.97 : x
  2. Step 2: Convert to fraction form
    2,972.70/4,097.39 = 2,086.97/x
  3. Step 3: Cross multiply
    2,972.70x = 4,097.39 × 2,086.97
  4. Step 4: Simplify right side
    2,972.70x = 8,551,099.09
  5. Step 5: Solve for x
    x = 8,551,099.09/2,972.70
  6. Step 6: Final answer
    x = 2,876.54

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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.