Home / 1,519.49-2,279.24-423.72

Finding the Fourth Proportional to 1,519.49, 2,279.24 and 423.72

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Solution

The fourth proportional to 1,519.49, 2,279.24 and 423.72 is: 635.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,519.49 : 2,279.24 = 423.72 : x
  2. Step 2: Convert to fraction form
    1,519.49/2,279.24 = 423.72/x
  3. Step 3: Cross multiply
    1,519.49x = 2,279.24 × 423.72
  4. Step 4: Simplify right side
    1,519.49x = 965,757.45
  5. Step 5: Solve for x
    x = 965,757.45/1,519.49
  6. Step 6: Final answer
    x = 635.58

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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.