Home / 1,814.27-2,721.90-515.75

Finding the Fourth Proportional to 1,814.27, 2,721.90 and 515.75

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Solution

The fourth proportional to 1,814.27, 2,721.90 and 515.75 is: 773.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,814.27 : 2,721.90 = 515.75 : x
  2. Step 2: Convert to fraction form
    1,814.27/2,721.90 = 515.75/x
  3. Step 3: Cross multiply
    1,814.27x = 2,721.90 × 515.75
  4. Step 4: Simplify right side
    1,814.27x = 1,403,819.93
  5. Step 5: Solve for x
    x = 1,403,819.93/1,814.27
  6. Step 6: Final answer
    x = 773.77

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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.