Home / 2,311.66-3,189.37-1,367.56

Finding the Fourth Proportional to 2,311.66, 3,189.37 and 1,367.56

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Solution

The fourth proportional to 2,311.66, 3,189.37 and 1,367.56 is: 1,886.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.66 : 3,189.37 = 1,367.56 : x
  2. Step 2: Convert to fraction form
    2,311.66/3,189.37 = 1,367.56/x
  3. Step 3: Cross multiply
    2,311.66x = 3,189.37 × 1,367.56
  4. Step 4: Simplify right side
    2,311.66x = 4,361,654.84
  5. Step 5: Solve for x
    x = 4,361,654.84/2,311.66
  6. Step 6: Final answer
    x = 1,886.81

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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.