Home / 4,190.36-6,279.86-1,998.90

Finding the Fourth Proportional to 4,190.36, 6,279.86 and 1,998.90

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Solution

The fourth proportional to 4,190.36, 6,279.86 and 1,998.90 is: 2,995.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,190.36 : 6,279.86 = 1,998.90 : x
  2. Step 2: Convert to fraction form
    4,190.36/6,279.86 = 1,998.90/x
  3. Step 3: Cross multiply
    4,190.36x = 6,279.86 × 1,998.90
  4. Step 4: Simplify right side
    4,190.36x = 12,552,817.15
  5. Step 5: Solve for x
    x = 12,552,817.15/4,190.36
  6. Step 6: Final answer
    x = 2,995.65

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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.