Home / 4,268.80-6,403.20-1,190.80

Finding the Fourth Proportional to 4,268.80, 6,403.20 and 1,190.80

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Solution

The fourth proportional to 4,268.80, 6,403.20 and 1,190.80 is: 1,786.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,268.80 : 6,403.20 = 1,190.80 : x
  2. Step 2: Convert to fraction form
    4,268.80/6,403.20 = 1,190.80/x
  3. Step 3: Cross multiply
    4,268.80x = 6,403.20 × 1,190.80
  4. Step 4: Simplify right side
    4,268.80x = 7,624,930.56
  5. Step 5: Solve for x
    x = 7,624,930.56/4,268.80
  6. Step 6: Final answer
    x = 1,786.20

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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.