Home / 4,190.80-6,286.36-2,109.68

Finding the Fourth Proportional to 4,190.80, 6,286.36 and 2,109.68

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Solution

The fourth proportional to 4,190.80, 6,286.36 and 2,109.68 is: 3,164.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,190.80 : 6,286.36 = 2,109.68 : x
  2. Step 2: Convert to fraction form
    4,190.80/6,286.36 = 2,109.68/x
  3. Step 3: Cross multiply
    4,190.80x = 6,286.36 × 2,109.68
  4. Step 4: Simplify right side
    4,190.80x = 13,262,207.96
  5. Step 5: Solve for x
    x = 13,262,207.96/4,190.80
  6. Step 6: Final answer
    x = 3,164.60

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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.