Home / 2,276.85-3,138.36-1,778.62

Finding the Fourth Proportional to 2,276.85, 3,138.36 and 1,778.62

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Solution

The fourth proportional to 2,276.85, 3,138.36 and 1,778.62 is: 2,451.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,276.85 : 3,138.36 = 1,778.62 : x
  2. Step 2: Convert to fraction form
    2,276.85/3,138.36 = 1,778.62/x
  3. Step 3: Cross multiply
    2,276.85x = 3,138.36 × 1,778.62
  4. Step 4: Simplify right side
    2,276.85x = 5,581,949.86
  5. Step 5: Solve for x
    x = 5,581,949.86/2,276.85
  6. Step 6: Final answer
    x = 2,451.61

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1.5x scale

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.