Home / 2,172.87-3,255.39-1,828.35

Finding the Fourth Proportional to 2,172.87, 3,255.39 and 1,828.35

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Solution

The fourth proportional to 2,172.87, 3,255.39 and 1,828.35 is: 2,739.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.87 : 3,255.39 = 1,828.35 : x
  2. Step 2: Convert to fraction form
    2,172.87/3,255.39 = 1,828.35/x
  3. Step 3: Cross multiply
    2,172.87x = 3,255.39 × 1,828.35
  4. Step 4: Simplify right side
    2,172.87x = 5,951,992.31
  5. Step 5: Solve for x
    x = 5,951,992.31/2,172.87
  6. Step 6: Final answer
    x = 2,739.23

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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.