Home / 2,213.64-3,054.90-1,218.96

Finding the Fourth Proportional to 2,213.64, 3,054.90 and 1,218.96

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Solution

The fourth proportional to 2,213.64, 3,054.90 and 1,218.96 is: 1,682.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.64 : 3,054.90 = 1,218.96 : x
  2. Step 2: Convert to fraction form
    2,213.64/3,054.90 = 1,218.96/x
  3. Step 3: Cross multiply
    2,213.64x = 3,054.90 × 1,218.96
  4. Step 4: Simplify right side
    2,213.64x = 3,723,800.90
  5. Step 5: Solve for x
    x = 3,723,800.90/2,213.64
  6. Step 6: Final answer
    x = 1,682.21

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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.