Home / 3,390.20-5,090.10-2,660.60

Finding the Fourth Proportional to 3,390.20, 5,090.10 and 2,660.60

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Solution

The fourth proportional to 3,390.20, 5,090.10 and 2,660.60 is: 3,994.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.20 : 5,090.10 = 2,660.60 : x
  2. Step 2: Convert to fraction form
    3,390.20/5,090.10 = 2,660.60/x
  3. Step 3: Cross multiply
    3,390.20x = 5,090.10 × 2,660.60
  4. Step 4: Simplify right side
    3,390.20x = 13,542,720.06
  5. Step 5: Solve for x
    x = 13,542,720.06/3,390.20
  6. Step 6: Final answer
    x = 3,994.67

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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.