Home / 3,390.85-5,080.30-2,969.68

Finding the Fourth Proportional to 3,390.85, 5,080.30 and 2,969.68

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Solution

The fourth proportional to 3,390.85, 5,080.30 and 2,969.68 is: 4,449.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.85 : 5,080.30 = 2,969.68 : x
  2. Step 2: Convert to fraction form
    3,390.85/5,080.30 = 2,969.68/x
  3. Step 3: Cross multiply
    3,390.85x = 5,080.30 × 2,969.68
  4. Step 4: Simplify right side
    3,390.85x = 15,086,850.46
  5. Step 5: Solve for x
    x = 15,086,850.46/3,390.85
  6. Step 6: Final answer
    x = 4,449.28

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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.