Home / 2,786.80-4,161.38-2,422.48

Finding the Fourth Proportional to 2,786.80, 4,161.38 and 2,422.48

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Solution

The fourth proportional to 2,786.80, 4,161.38 and 2,422.48 is: 3,617.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.80 : 4,161.38 = 2,422.48 : x
  2. Step 2: Convert to fraction form
    2,786.80/4,161.38 = 2,422.48/x
  3. Step 3: Cross multiply
    2,786.80x = 4,161.38 × 2,422.48
  4. Step 4: Simplify right side
    2,786.80x = 10,080,859.82
  5. Step 5: Solve for x
    x = 10,080,859.82/2,786.80
  6. Step 6: Final answer
    x = 3,617.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.