Home / 2,726.80-4,090.20-1,190.80

Finding the Fourth Proportional to 2,726.80, 4,090.20 and 1,190.80

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Solution

The fourth proportional to 2,726.80, 4,090.20 and 1,190.80 is: 1,786.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,726.80 : 4,090.20 = 1,190.80 : x
  2. Step 2: Convert to fraction form
    2,726.80/4,090.20 = 1,190.80/x
  3. Step 3: Cross multiply
    2,726.80x = 4,090.20 × 1,190.80
  4. Step 4: Simplify right side
    2,726.80x = 4,870,610.16
  5. Step 5: Solve for x
    x = 4,870,610.16/2,726.80
  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.