Home / 2,186.26-3,279.40-725.41

Finding the Fourth Proportional to 2,186.26, 3,279.40 and 725.41

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Solution

The fourth proportional to 2,186.26, 3,279.40 and 725.41 is: 1,088.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,186.26 : 3,279.40 = 725.41 : x
  2. Step 2: Convert to fraction form
    2,186.26/3,279.40 = 725.41/x
  3. Step 3: Cross multiply
    2,186.26x = 3,279.40 × 725.41
  4. Step 4: Simplify right side
    2,186.26x = 2,378,925.14
  5. Step 5: Solve for x
    x = 2,378,925.14/2,186.26
  6. Step 6: Final answer
    x = 1,088.12

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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.