Home / 3,620.36-5,430.97-1,279.88

Finding the Fourth Proportional to 3,620.36, 5,430.97 and 1,279.88

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Solution

The fourth proportional to 3,620.36, 5,430.97 and 1,279.88 is: 1,919.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.36 : 5,430.97 = 1,279.88 : x
  2. Step 2: Convert to fraction form
    3,620.36/5,430.97 = 1,279.88/x
  3. Step 3: Cross multiply
    3,620.36x = 5,430.97 × 1,279.88
  4. Step 4: Simplify right side
    3,620.36x = 6,951,003.46
  5. Step 5: Solve for x
    x = 6,951,003.46/3,620.36
  6. Step 6: Final answer
    x = 1,919.98

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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.