Home / 2,216.65-3,058.99-1,221.96

Finding the Fourth Proportional to 2,216.65, 3,058.99 and 1,221.96

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Solution

The fourth proportional to 2,216.65, 3,058.99 and 1,221.96 is: 1,686.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,216.65 : 3,058.99 = 1,221.96 : x
  2. Step 2: Convert to fraction form
    2,216.65/3,058.99 = 1,221.96/x
  3. Step 3: Cross multiply
    2,216.65x = 3,058.99 × 1,221.96
  4. Step 4: Simplify right side
    2,216.65x = 3,737,963.42
  5. Step 5: Solve for x
    x = 3,737,963.42/2,216.65
  6. Step 6: Final answer
    x = 1,686.31

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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.