Home / 2,178.14-3,268.02-717.30

Finding the Fourth Proportional to 2,178.14, 3,268.02 and 717.30

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Solution

The fourth proportional to 2,178.14, 3,268.02 and 717.30 is: 1,076.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.14 : 3,268.02 = 717.30 : x
  2. Step 2: Convert to fraction form
    2,178.14/3,268.02 = 717.30/x
  3. Step 3: Cross multiply
    2,178.14x = 3,268.02 × 717.30
  4. Step 4: Simplify right side
    2,178.14x = 2,344,150.75
  5. Step 5: Solve for x
    x = 2,344,150.75/2,178.14
  6. Step 6: Final answer
    x = 1,076.22

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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.