Home / 2,809.80-4,211.42-2,114.23

Finding the Fourth Proportional to 2,809.80, 4,211.42 and 2,114.23

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Solution

The fourth proportional to 2,809.80, 4,211.42 and 2,114.23 is: 3,168.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,809.80 : 4,211.42 = 2,114.23 : x
  2. Step 2: Convert to fraction form
    2,809.80/4,211.42 = 2,114.23/x
  3. Step 3: Cross multiply
    2,809.80x = 4,211.42 × 2,114.23
  4. Step 4: Simplify right side
    2,809.80x = 8,903,910.51
  5. Step 5: Solve for x
    x = 8,903,910.51/2,809.80
  6. Step 6: Final answer
    x = 3,168.88

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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.