Home / 2,519.53-3,779.69-1,286.28

Finding the Fourth Proportional to 2,519.53, 3,779.69 and 1,286.28

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Solution

The fourth proportional to 2,519.53, 3,779.69 and 1,286.28 is: 1,929.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,519.53 : 3,779.69 = 1,286.28 : x
  2. Step 2: Convert to fraction form
    2,519.53/3,779.69 = 1,286.28/x
  3. Step 3: Cross multiply
    2,519.53x = 3,779.69 × 1,286.28
  4. Step 4: Simplify right side
    2,519.53x = 4,861,720.75
  5. Step 5: Solve for x
    x = 4,861,720.75/2,519.53
  6. Step 6: Final answer
    x = 1,929.61

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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.