Home / 2,680.21-4,021.13-1,806.22

Finding the Fourth Proportional to 2,680.21, 4,021.13 and 1,806.22

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Solution

The fourth proportional to 2,680.21, 4,021.13 and 1,806.22 is: 2,709.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,680.21 : 4,021.13 = 1,806.22 : x
  2. Step 2: Convert to fraction form
    2,680.21/4,021.13 = 1,806.22/x
  3. Step 3: Cross multiply
    2,680.21x = 4,021.13 × 1,806.22
  4. Step 4: Simplify right side
    2,680.21x = 7,263,045.43
  5. Step 5: Solve for x
    x = 7,263,045.43/2,680.21
  6. Step 6: Final answer
    x = 2,709.88

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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.