Home / 3,619.46-5,428.83-1,279.22

Finding the Fourth Proportional to 3,619.46, 5,428.83 and 1,279.22

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Solution

The fourth proportional to 3,619.46, 5,428.83 and 1,279.22 is: 1,918.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.46 : 5,428.83 = 1,279.22 : x
  2. Step 2: Convert to fraction form
    3,619.46/5,428.83 = 1,279.22/x
  3. Step 3: Cross multiply
    3,619.46x = 5,428.83 × 1,279.22
  4. Step 4: Simplify right side
    3,619.46x = 6,944,667.91
  5. Step 5: Solve for x
    x = 6,944,667.91/3,619.46
  6. Step 6: Final answer
    x = 1,918.70

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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.