Home / 2,178.48-3,268.20-717.58

Finding the Fourth Proportional to 2,178.48, 3,268.20 and 717.58

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Solution

The fourth proportional to 2,178.48, 3,268.20 and 717.58 is: 1,076.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.48 : 3,268.20 = 717.58 : x
  2. Step 2: Convert to fraction form
    2,178.48/3,268.20 = 717.58/x
  3. Step 3: Cross multiply
    2,178.48x = 3,268.20 × 717.58
  4. Step 4: Simplify right side
    2,178.48x = 2,345,194.96
  5. Step 5: Solve for x
    x = 2,345,194.96/2,178.48
  6. Step 6: Final answer
    x = 1,076.53

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1.5x scale

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.