Home / 2,216.64-3,058.74-1,221.96

Finding the Fourth Proportional to 2,216.64, 3,058.74 and 1,221.96

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Solution

The fourth proportional to 2,216.64, 3,058.74 and 1,221.96 is: 1,686.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,216.64 : 3,058.74 = 1,221.96 : x
  2. Step 2: Convert to fraction form
    2,216.64/3,058.74 = 1,221.96/x
  3. Step 3: Cross multiply
    2,216.64x = 3,058.74 × 1,221.96
  4. Step 4: Simplify right side
    2,216.64x = 3,737,657.93
  5. Step 5: Solve for x
    x = 3,737,657.93/2,216.64
  6. Step 6: Final answer
    x = 1,686.18

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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.