Home / 2,778.35-4,162.91-1,954.89

Finding the Fourth Proportional to 2,778.35, 4,162.91 and 1,954.89

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Solution

The fourth proportional to 2,778.35, 4,162.91 and 1,954.89 is: 2,929.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.35 : 4,162.91 = 1,954.89 : x
  2. Step 2: Convert to fraction form
    2,778.35/4,162.91 = 1,954.89/x
  3. Step 3: Cross multiply
    2,778.35x = 4,162.91 × 1,954.89
  4. Step 4: Simplify right side
    2,778.35x = 8,138,021.36
  5. Step 5: Solve for x
    x = 8,138,021.36/2,778.35
  6. Step 6: Final answer
    x = 2,929.09

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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.