Home / 2,260.20-3,390.12-1,090.80

Finding the Fourth Proportional to 2,260.20, 3,390.12 and 1,090.80

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Solution

The fourth proportional to 2,260.20, 3,390.12 and 1,090.80 is: 1,636.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,260.20 : 3,390.12 = 1,090.80 : x
  2. Step 2: Convert to fraction form
    2,260.20/3,390.12 = 1,090.80/x
  3. Step 3: Cross multiply
    2,260.20x = 3,390.12 × 1,090.80
  4. Step 4: Simplify right side
    2,260.20x = 3,697,942.90
  5. Step 5: Solve for x
    x = 3,697,942.90/2,260.20
  6. Step 6: Final answer
    x = 1,636.11

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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.