Home / 2,186.18-3,279.66-726.38

Finding the Fourth Proportional to 2,186.18, 3,279.66 and 726.38

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Solution

The fourth proportional to 2,186.18, 3,279.66 and 726.38 is: 1,089.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,186.18 : 3,279.66 = 726.38 : x
  2. Step 2: Convert to fraction form
    2,186.18/3,279.66 = 726.38/x
  3. Step 3: Cross multiply
    2,186.18x = 3,279.66 × 726.38
  4. Step 4: Simplify right side
    2,186.18x = 2,382,279.43
  5. Step 5: Solve for x
    x = 2,382,279.43/2,186.18
  6. Step 6: Final answer
    x = 1,089.70

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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.