Home / 3,105.41-4,285.35-1,778.16

Finding the Fourth Proportional to 3,105.41, 4,285.35 and 1,778.16

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Solution

The fourth proportional to 3,105.41, 4,285.35 and 1,778.16 is: 2,453.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.41 : 4,285.35 = 1,778.16 : x
  2. Step 2: Convert to fraction form
    3,105.41/4,285.35 = 1,778.16/x
  3. Step 3: Cross multiply
    3,105.41x = 4,285.35 × 1,778.16
  4. Step 4: Simplify right side
    3,105.41x = 7,620,037.96
  5. Step 5: Solve for x
    x = 7,620,037.96/3,105.41
  6. Step 6: Final answer
    x = 2,453.80

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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.