Home / 2,181.36-3,271.80-1,086.42

Finding the Fourth Proportional to 2,181.36, 3,271.80 and 1,086.42

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Solution

The fourth proportional to 2,181.36, 3,271.80 and 1,086.42 is: 1,629.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.36 : 3,271.80 = 1,086.42 : x
  2. Step 2: Convert to fraction form
    2,181.36/3,271.80 = 1,086.42/x
  3. Step 3: Cross multiply
    2,181.36x = 3,271.80 × 1,086.42
  4. Step 4: Simplify right side
    2,181.36x = 3,554,548.96
  5. Step 5: Solve for x
    x = 3,554,548.96/2,181.36
  6. Step 6: Final answer
    x = 1,629.51

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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.