Home / 3,020.40-4,530.60-2,722.80

Finding the Fourth Proportional to 3,020.40, 4,530.60 and 2,722.80

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Solution

The fourth proportional to 3,020.40, 4,530.60 and 2,722.80 is: 4,084.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,020.40 : 4,530.60 = 2,722.80 : x
  2. Step 2: Convert to fraction form
    3,020.40/4,530.60 = 2,722.80/x
  3. Step 3: Cross multiply
    3,020.40x = 4,530.60 × 2,722.80
  4. Step 4: Simplify right side
    3,020.40x = 12,335,917.68
  5. Step 5: Solve for x
    x = 12,335,917.68/3,020.40
  6. Step 6: Final answer
    x = 4,084.20

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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.