Home / 3,105.45-4,659.80-1,256.76

Finding the Fourth Proportional to 3,105.45, 4,659.80 and 1,256.76

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Solution

The fourth proportional to 3,105.45, 4,659.80 and 1,256.76 is: 1,885.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.45 : 4,659.80 = 1,256.76 : x
  2. Step 2: Convert to fraction form
    3,105.45/4,659.80 = 1,256.76/x
  3. Step 3: Cross multiply
    3,105.45x = 4,659.80 × 1,256.76
  4. Step 4: Simplify right side
    3,105.45x = 5,856,243.96
  5. Step 5: Solve for x
    x = 5,856,243.96/3,105.45
  6. Step 6: Final answer
    x = 1,885.80

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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.