Home / 2,819.24-3,890.13-2,505.86

Finding the Fourth Proportional to 2,819.24, 3,890.13 and 2,505.86

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Solution

The fourth proportional to 2,819.24, 3,890.13 and 2,505.86 is: 3,457.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.24 : 3,890.13 = 2,505.86 : x
  2. Step 2: Convert to fraction form
    2,819.24/3,890.13 = 2,505.86/x
  3. Step 3: Cross multiply
    2,819.24x = 3,890.13 × 2,505.86
  4. Step 4: Simplify right side
    2,819.24x = 9,748,121.16
  5. Step 5: Solve for x
    x = 9,748,121.16/2,819.24
  6. Step 6: Final answer
    x = 3,457.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.