Home / 2,812.12-4,209.84-2,084.96

Finding the Fourth Proportional to 2,812.12, 4,209.84 and 2,084.96

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Solution

The fourth proportional to 2,812.12, 4,209.84 and 2,084.96 is: 3,121.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.12 : 4,209.84 = 2,084.96 : x
  2. Step 2: Convert to fraction form
    2,812.12/4,209.84 = 2,084.96/x
  3. Step 3: Cross multiply
    2,812.12x = 4,209.84 × 2,084.96
  4. Step 4: Simplify right side
    2,812.12x = 8,777,348.01
  5. Step 5: Solve for x
    x = 8,777,348.01/2,812.12
  6. Step 6: Final answer
    x = 3,121.26

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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.