Home / 3,189.72-4,401.82-1,930.74

Finding the Fourth Proportional to 3,189.72, 4,401.82 and 1,930.74

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Solution

The fourth proportional to 3,189.72, 4,401.82 and 1,930.74 is: 2,664.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.72 : 4,401.82 = 1,930.74 : x
  2. Step 2: Convert to fraction form
    3,189.72/4,401.82 = 1,930.74/x
  3. Step 3: Cross multiply
    3,189.72x = 4,401.82 × 1,930.74
  4. Step 4: Simplify right side
    3,189.72x = 8,498,769.95
  5. Step 5: Solve for x
    x = 8,498,769.95/3,189.72
  6. Step 6: Final answer
    x = 2,664.43

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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.