Home / 1,519.55-2,279.24-423.89

Finding the Fourth Proportional to 1,519.55, 2,279.24 and 423.89

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Solution

The fourth proportional to 1,519.55, 2,279.24 and 423.89 is: 635.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,519.55 : 2,279.24 = 423.89 : x
  2. Step 2: Convert to fraction form
    1,519.55/2,279.24 = 423.89/x
  3. Step 3: Cross multiply
    1,519.55x = 2,279.24 × 423.89
  4. Step 4: Simplify right side
    1,519.55x = 966,133.53
  5. Step 5: Solve for x
    x = 966,133.53/1,519.55
  6. Step 6: Final answer
    x = 635.80

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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.