Home / 2,806.21-3,872.23-1,627.12

Finding the Fourth Proportional to 2,806.21, 3,872.23 and 1,627.12

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Solution

The fourth proportional to 2,806.21, 3,872.23 and 1,627.12 is: 2,245.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,806.21 : 3,872.23 = 1,627.12 : x
  2. Step 2: Convert to fraction form
    2,806.21/3,872.23 = 1,627.12/x
  3. Step 3: Cross multiply
    2,806.21x = 3,872.23 × 1,627.12
  4. Step 4: Simplify right side
    2,806.21x = 6,300,582.88
  5. Step 5: Solve for x
    x = 6,300,582.88/2,806.21
  6. Step 6: Final answer
    x = 2,245.23

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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.