Home / 3,491.90-5,230.81-2,100.97

Finding the Fourth Proportional to 3,491.90, 5,230.81 and 2,100.97

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Solution

The fourth proportional to 3,491.90, 5,230.81 and 2,100.97 is: 3,147.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,491.90 : 5,230.81 = 2,100.97 : x
  2. Step 2: Convert to fraction form
    3,491.90/5,230.81 = 2,100.97/x
  3. Step 3: Cross multiply
    3,491.90x = 5,230.81 × 2,100.97
  4. Step 4: Simplify right side
    3,491.90x = 10,989,738.23
  5. Step 5: Solve for x
    x = 10,989,738.23/3,491.90
  6. Step 6: Final answer
    x = 3,147.21

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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.