Home / 3,208.55-4,428.09-1,949.31

Finding the Fourth Proportional to 3,208.55, 4,428.09 and 1,949.31

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Solution

The fourth proportional to 3,208.55, 4,428.09 and 1,949.31 is: 2,690.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,208.55 : 4,428.09 = 1,949.31 : x
  2. Step 2: Convert to fraction form
    3,208.55/4,428.09 = 1,949.31/x
  3. Step 3: Cross multiply
    3,208.55x = 4,428.09 × 1,949.31
  4. Step 4: Simplify right side
    3,208.55x = 8,631,720.12
  5. Step 5: Solve for x
    x = 8,631,720.12/3,208.55
  6. Step 6: Final answer
    x = 2,690.23

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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.