Home / 4,190.80-6,282.60-2,138.80

Finding the Fourth Proportional to 4,190.80, 6,282.60 and 2,138.80

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Solution

The fourth proportional to 4,190.80, 6,282.60 and 2,138.80 is: 3,206.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,190.80 : 6,282.60 = 2,138.80 : x
  2. Step 2: Convert to fraction form
    4,190.80/6,282.60 = 2,138.80/x
  3. Step 3: Cross multiply
    4,190.80x = 6,282.60 × 2,138.80
  4. Step 4: Simplify right side
    4,190.80x = 13,437,224.88
  5. Step 5: Solve for x
    x = 13,437,224.88/4,190.80
  6. Step 6: Final answer
    x = 3,206.36

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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.