Home / 3,090.20-4,266.96-2,028.80

Finding the Fourth Proportional to 3,090.20, 4,266.96 and 2,028.80

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Solution

The fourth proportional to 3,090.20, 4,266.96 and 2,028.80 is: 2,801.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.20 : 4,266.96 = 2,028.80 : x
  2. Step 2: Convert to fraction form
    3,090.20/4,266.96 = 2,028.80/x
  3. Step 3: Cross multiply
    3,090.20x = 4,266.96 × 2,028.80
  4. Step 4: Simplify right side
    3,090.20x = 8,656,808.45
  5. Step 5: Solve for x
    x = 8,656,808.45/3,090.20
  6. Step 6: Final answer
    x = 2,801.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.