Home / 2,806.30-3,872.10-1,627.21

Finding the Fourth Proportional to 2,806.30, 3,872.10 and 1,627.21

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Solution

The fourth proportional to 2,806.30, 3,872.10 and 1,627.21 is: 2,245.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,806.30 : 3,872.10 = 1,627.21 : x
  2. Step 2: Convert to fraction form
    2,806.30/3,872.10 = 1,627.21/x
  3. Step 3: Cross multiply
    2,806.30x = 3,872.10 × 1,627.21
  4. Step 4: Simplify right side
    2,806.30x = 6,300,719.84
  5. Step 5: Solve for x
    x = 6,300,719.84/2,806.30
  6. Step 6: Final answer
    x = 2,245.21

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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.