Home / 2,518.78-3,778.26-1,423.12

Finding the Fourth Proportional to 2,518.78, 3,778.26 and 1,423.12

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Solution

The fourth proportional to 2,518.78, 3,778.26 and 1,423.12 is: 2,134.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,518.78 : 3,778.26 = 1,423.12 : x
  2. Step 2: Convert to fraction form
    2,518.78/3,778.26 = 1,423.12/x
  3. Step 3: Cross multiply
    2,518.78x = 3,778.26 × 1,423.12
  4. Step 4: Simplify right side
    2,518.78x = 5,376,917.37
  5. Step 5: Solve for x
    x = 5,376,917.37/2,518.78
  6. Step 6: Final answer
    x = 2,134.73

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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.