Home / 2,311.86-3,189.26-2,222.35

Finding the Fourth Proportional to 2,311.86, 3,189.26 and 2,222.35

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Solution

The fourth proportional to 2,311.86, 3,189.26 and 2,222.35 is: 3,065.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.86 : 3,189.26 = 2,222.35 : x
  2. Step 2: Convert to fraction form
    2,311.86/3,189.26 = 2,222.35/x
  3. Step 3: Cross multiply
    2,311.86x = 3,189.26 × 2,222.35
  4. Step 4: Simplify right side
    2,311.86x = 7,087,650.90
  5. Step 5: Solve for x
    x = 7,087,650.90/2,311.86
  6. Step 6: Final answer
    x = 3,065.78

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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.