Home / 2,122.16-3,181.26-1,148.36

Finding the Fourth Proportional to 2,122.16, 3,181.26 and 1,148.36

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Solution

The fourth proportional to 2,122.16, 3,181.26 and 1,148.36 is: 1,721.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.16 : 3,181.26 = 1,148.36 : x
  2. Step 2: Convert to fraction form
    2,122.16/3,181.26 = 1,148.36/x
  3. Step 3: Cross multiply
    2,122.16x = 3,181.26 × 1,148.36
  4. Step 4: Simplify right side
    2,122.16x = 3,653,231.73
  5. Step 5: Solve for x
    x = 3,653,231.73/2,122.16
  6. Step 6: Final answer
    x = 1,721.47

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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.