Home / 2,186.20-3,279.76-725.25

Finding the Fourth Proportional to 2,186.20, 3,279.76 and 725.25

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Solution

The fourth proportional to 2,186.20, 3,279.76 and 725.25 is: 1,088.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,186.20 : 3,279.76 = 725.25 : x
  2. Step 2: Convert to fraction form
    2,186.20/3,279.76 = 725.25/x
  3. Step 3: Cross multiply
    2,186.20x = 3,279.76 × 725.25
  4. Step 4: Simplify right side
    2,186.20x = 2,378,650.95
  5. Step 5: Solve for x
    x = 2,378,650.95/2,186.20
  6. Step 6: Final answer
    x = 1,088.03

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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.