Home / 3,105.58-4,285.64-1,742.84

Finding the Fourth Proportional to 3,105.58, 4,285.64 and 1,742.84

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Solution

The fourth proportional to 3,105.58, 4,285.64 and 1,742.84 is: 2,405.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.58 : 4,285.64 = 1,742.84 : x
  2. Step 2: Convert to fraction form
    3,105.58/4,285.64 = 1,742.84/x
  3. Step 3: Cross multiply
    3,105.58x = 4,285.64 × 1,742.84
  4. Step 4: Simplify right side
    3,105.58x = 7,469,184.82
  5. Step 5: Solve for x
    x = 7,469,184.82/3,105.58
  6. Step 6: Final answer
    x = 2,405.09

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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.