Home / 2,645.85-3,977.78-2,162.41

Finding the Fourth Proportional to 2,645.85, 3,977.78 and 2,162.41

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Solution

The fourth proportional to 2,645.85, 3,977.78 and 2,162.41 is: 3,250.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,645.85 : 3,977.78 = 2,162.41 : x
  2. Step 2: Convert to fraction form
    2,645.85/3,977.78 = 2,162.41/x
  3. Step 3: Cross multiply
    2,645.85x = 3,977.78 × 2,162.41
  4. Step 4: Simplify right side
    2,645.85x = 8,601,580.44
  5. Step 5: Solve for x
    x = 8,601,580.44/2,645.85
  6. Step 6: Final answer
    x = 3,250.97

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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.