Home / 2,639.22-3,643.83-1,644.90

Finding the Fourth Proportional to 2,639.22, 3,643.83 and 1,644.90

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Solution

The fourth proportional to 2,639.22, 3,643.83 and 1,644.90 is: 2,271.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.22 : 3,643.83 = 1,644.90 : x
  2. Step 2: Convert to fraction form
    2,639.22/3,643.83 = 1,644.90/x
  3. Step 3: Cross multiply
    2,639.22x = 3,643.83 × 1,644.90
  4. Step 4: Simplify right side
    2,639.22x = 5,993,735.97
  5. Step 5: Solve for x
    x = 5,993,735.97/2,639.22
  6. Step 6: Final answer
    x = 2,271.03

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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.