Home / 2,682.20-4,022.10-1,220.60

Finding the Fourth Proportional to 2,682.20, 4,022.10 and 1,220.60

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Solution

The fourth proportional to 2,682.20, 4,022.10 and 1,220.60 is: 1,830.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,682.20 : 4,022.10 = 1,220.60 : x
  2. Step 2: Convert to fraction form
    2,682.20/4,022.10 = 1,220.60/x
  3. Step 3: Cross multiply
    2,682.20x = 4,022.10 × 1,220.60
  4. Step 4: Simplify right side
    2,682.20x = 4,909,375.26
  5. Step 5: Solve for x
    x = 4,909,375.26/2,682.20
  6. Step 6: Final answer
    x = 1,830.35

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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.