Home / 3,436.65-5,144.99-2,129.31

Finding the Fourth Proportional to 3,436.65, 5,144.99 and 2,129.31

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Solution

The fourth proportional to 3,436.65, 5,144.99 and 2,129.31 is: 3,187.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,436.65 : 5,144.99 = 2,129.31 : x
  2. Step 2: Convert to fraction form
    3,436.65/5,144.99 = 2,129.31/x
  3. Step 3: Cross multiply
    3,436.65x = 5,144.99 × 2,129.31
  4. Step 4: Simplify right side
    3,436.65x = 10,955,268.01
  5. Step 5: Solve for x
    x = 10,955,268.01/3,436.65
  6. Step 6: Final answer
    x = 3,187.78

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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.