Home / 3,269.76-4,512.38-1,777.78

Finding the Fourth Proportional to 3,269.76, 4,512.38 and 1,777.78

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Solution

The fourth proportional to 3,269.76, 4,512.38 and 1,777.78 is: 2,453.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,269.76 : 4,512.38 = 1,777.78 : x
  2. Step 2: Convert to fraction form
    3,269.76/4,512.38 = 1,777.78/x
  3. Step 3: Cross multiply
    3,269.76x = 4,512.38 × 1,777.78
  4. Step 4: Simplify right side
    3,269.76x = 8,022,018.92
  5. Step 5: Solve for x
    x = 8,022,018.92/3,269.76
  6. Step 6: Final answer
    x = 2,453.40

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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.