Home / 2,213.72-3,054.92-1,218.98

Finding the Fourth Proportional to 2,213.72, 3,054.92 and 1,218.98

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Solution

The fourth proportional to 2,213.72, 3,054.92 and 1,218.98 is: 1,682.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.72 : 3,054.92 = 1,218.98 : x
  2. Step 2: Convert to fraction form
    2,213.72/3,054.92 = 1,218.98/x
  3. Step 3: Cross multiply
    2,213.72x = 3,054.92 × 1,218.98
  4. Step 4: Simplify right side
    2,213.72x = 3,723,865.01
  5. Step 5: Solve for x
    x = 3,723,865.01/2,213.72
  6. Step 6: Final answer
    x = 1,682.18

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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.