Home / 3,425.98-5,129.42-2,190.34

Finding the Fourth Proportional to 3,425.98, 5,129.42 and 2,190.34

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Solution

The fourth proportional to 3,425.98, 5,129.42 and 2,190.34 is: 3,279.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,425.98 : 5,129.42 = 2,190.34 : x
  2. Step 2: Convert to fraction form
    3,425.98/5,129.42 = 2,190.34/x
  3. Step 3: Cross multiply
    3,425.98x = 5,129.42 × 2,190.34
  4. Step 4: Simplify right side
    3,425.98x = 11,235,173.80
  5. Step 5: Solve for x
    x = 11,235,173.80/3,425.98
  6. Step 6: Final answer
    x = 3,279.40

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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.