Home / 2,178.19-3,268.20-1,203.15

Finding the Fourth Proportional to 2,178.19, 3,268.20 and 1,203.15

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Solution

The fourth proportional to 2,178.19, 3,268.20 and 1,203.15 is: 1,805.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.19 : 3,268.20 = 1,203.15 : x
  2. Step 2: Convert to fraction form
    2,178.19/3,268.20 = 1,203.15/x
  3. Step 3: Cross multiply
    2,178.19x = 3,268.20 × 1,203.15
  4. Step 4: Simplify right side
    2,178.19x = 3,932,144.83
  5. Step 5: Solve for x
    x = 3,932,144.83/2,178.19
  6. Step 6: Final answer
    x = 1,805.23

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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.