Home / 3,394.29-5,090.39-1,638.19

Finding the Fourth Proportional to 3,394.29, 5,090.39 and 1,638.19

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Solution

The fourth proportional to 3,394.29, 5,090.39 and 1,638.19 is: 2,456.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,394.29 : 5,090.39 = 1,638.19 : x
  2. Step 2: Convert to fraction form
    3,394.29/5,090.39 = 1,638.19/x
  3. Step 3: Cross multiply
    3,394.29x = 5,090.39 × 1,638.19
  4. Step 4: Simplify right side
    3,394.29x = 8,339,025.99
  5. Step 5: Solve for x
    x = 8,339,025.99/3,394.29
  6. Step 6: Final answer
    x = 2,456.78

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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.