Home / 3,431.10-5,144.49-1,208.71

Finding the Fourth Proportional to 3,431.10, 5,144.49 and 1,208.71

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Solution

The fourth proportional to 3,431.10, 5,144.49 and 1,208.71 is: 1,812.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.10 : 5,144.49 = 1,208.71 : x
  2. Step 2: Convert to fraction form
    3,431.10/5,144.49 = 1,208.71/x
  3. Step 3: Cross multiply
    3,431.10x = 5,144.49 × 1,208.71
  4. Step 4: Simplify right side
    3,431.10x = 6,218,214.01
  5. Step 5: Solve for x
    x = 6,218,214.01/3,431.10
  6. Step 6: Final answer
    x = 1,812.31

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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.