Home / 2,242.12-3,081.14-2,139.22

Finding the Fourth Proportional to 2,242.12, 3,081.14 and 2,139.22

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Solution

The fourth proportional to 2,242.12, 3,081.14 and 2,139.22 is: 2,939.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,242.12 : 3,081.14 = 2,139.22 : x
  2. Step 2: Convert to fraction form
    2,242.12/3,081.14 = 2,139.22/x
  3. Step 3: Cross multiply
    2,242.12x = 3,081.14 × 2,139.22
  4. Step 4: Simplify right side
    2,242.12x = 6,591,237.49
  5. Step 5: Solve for x
    x = 6,591,237.49/2,242.12
  6. Step 6: Final answer
    x = 2,939.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.