Home / 2,786.40-4,172.31-1,481.49

Finding the Fourth Proportional to 2,786.40, 4,172.31 and 1,481.49

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Solution

The fourth proportional to 2,786.40, 4,172.31 and 1,481.49 is: 2,218.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.40 : 4,172.31 = 1,481.49 : x
  2. Step 2: Convert to fraction form
    2,786.40/4,172.31 = 1,481.49/x
  3. Step 3: Cross multiply
    2,786.40x = 4,172.31 × 1,481.49
  4. Step 4: Simplify right side
    2,786.40x = 6,181,235.54
  5. Step 5: Solve for x
    x = 6,181,235.54/2,786.40
  6. Step 6: Final answer
    x = 2,218.36

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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.