Home / 2,216.12-3,058.07-1,221.44

Finding the Fourth Proportional to 2,216.12, 3,058.07 and 1,221.44

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Solution

The fourth proportional to 2,216.12, 3,058.07 and 1,221.44 is: 1,685.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,216.12 : 3,058.07 = 1,221.44 : x
  2. Step 2: Convert to fraction form
    2,216.12/3,058.07 = 1,221.44/x
  3. Step 3: Cross multiply
    2,216.12x = 3,058.07 × 1,221.44
  4. Step 4: Simplify right side
    2,216.12x = 3,735,227.62
  5. Step 5: Solve for x
    x = 3,735,227.62/2,216.12
  6. Step 6: Final answer
    x = 1,685.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.