Home / 2,778.24-4,162.73-1,954.78

Finding the Fourth Proportional to 2,778.24, 4,162.73 and 1,954.78

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Solution

The fourth proportional to 2,778.24, 4,162.73 and 1,954.78 is: 2,928.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.24 : 4,162.73 = 1,954.78 : x
  2. Step 2: Convert to fraction form
    2,778.24/4,162.73 = 1,954.78/x
  3. Step 3: Cross multiply
    2,778.24x = 4,162.73 × 1,954.78
  4. Step 4: Simplify right side
    2,778.24x = 8,137,221.35
  5. Step 5: Solve for x
    x = 8,137,221.35/2,778.24
  6. Step 6: Final answer
    x = 2,928.91

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1.5x scale

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.