Home / 2,121.05-3,181.48-1,022.09

Finding the Fourth Proportional to 2,121.05, 3,181.48 and 1,022.09

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Solution

The fourth proportional to 2,121.05, 3,181.48 and 1,022.09 is: 1,533.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.05 : 3,181.48 = 1,022.09 : x
  2. Step 2: Convert to fraction form
    2,121.05/3,181.48 = 1,022.09/x
  3. Step 3: Cross multiply
    2,121.05x = 3,181.48 × 1,022.09
  4. Step 4: Simplify right side
    2,121.05x = 3,251,740.43
  5. Step 5: Solve for x
    x = 3,251,740.43/2,121.05
  6. Step 6: Final answer
    x = 1,533.08

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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.