Home / 3,558.40-4,910.40-2,231.68

Finding the Fourth Proportional to 3,558.40, 4,910.40 and 2,231.68

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Solution

The fourth proportional to 3,558.40, 4,910.40 and 2,231.68 is: 3,079.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,558.40 : 4,910.40 = 2,231.68 : x
  2. Step 2: Convert to fraction form
    3,558.40/4,910.40 = 2,231.68/x
  3. Step 3: Cross multiply
    3,558.40x = 4,910.40 × 2,231.68
  4. Step 4: Simplify right side
    3,558.40x = 10,958,441.47
  5. Step 5: Solve for x
    x = 10,958,441.47/3,558.40
  6. Step 6: Final answer
    x = 3,079.60

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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.