Home / 3,231.75-4,459.61-1,905.39

Finding the Fourth Proportional to 3,231.75, 4,459.61 and 1,905.39

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Solution

The fourth proportional to 3,231.75, 4,459.61 and 1,905.39 is: 2,629.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,231.75 : 4,459.61 = 1,905.39 : x
  2. Step 2: Convert to fraction form
    3,231.75/4,459.61 = 1,905.39/x
  3. Step 3: Cross multiply
    3,231.75x = 4,459.61 × 1,905.39
  4. Step 4: Simplify right side
    3,231.75x = 8,497,286.77
  5. Step 5: Solve for x
    x = 8,497,286.77/3,231.75
  6. Step 6: Final answer
    x = 2,629.31

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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.