Home / 3,982.45-5,495.92-2,190.07

Finding the Fourth Proportional to 3,982.45, 5,495.92 and 2,190.07

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Solution

The fourth proportional to 3,982.45, 5,495.92 and 2,190.07 is: 3,022.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982.45 : 5,495.92 = 2,190.07 : x
  2. Step 2: Convert to fraction form
    3,982.45/5,495.92 = 2,190.07/x
  3. Step 3: Cross multiply
    3,982.45x = 5,495.92 × 2,190.07
  4. Step 4: Simplify right side
    3,982.45x = 12,036,422.03
  5. Step 5: Solve for x
    x = 12,036,422.03/3,982.45
  6. Step 6: Final answer
    x = 3,022.37

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1.5x scale

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.