Home / 2,190.30-3,279.05-2,126.30

Finding the Fourth Proportional to 2,190.30, 3,279.05 and 2,126.30

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Solution

The fourth proportional to 2,190.30, 3,279.05 and 2,126.30 is: 3,183.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.30 : 3,279.05 = 2,126.30 : x
  2. Step 2: Convert to fraction form
    2,190.30/3,279.05 = 2,126.30/x
  3. Step 3: Cross multiply
    2,190.30x = 3,279.05 × 2,126.30
  4. Step 4: Simplify right side
    2,190.30x = 6,972,244.02
  5. Step 5: Solve for x
    x = 6,972,244.02/2,190.30
  6. Step 6: Final answer
    x = 3,183.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.