Home / 2,213.55-3,054.69-1,218.90

Finding the Fourth Proportional to 2,213.55, 3,054.69 and 1,218.90

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Solution

The fourth proportional to 2,213.55, 3,054.69 and 1,218.90 is: 1,682.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.55 : 3,054.69 = 1,218.90 : x
  2. Step 2: Convert to fraction form
    2,213.55/3,054.69 = 1,218.90/x
  3. Step 3: Cross multiply
    2,213.55x = 3,054.69 × 1,218.90
  4. Step 4: Simplify right side
    2,213.55x = 3,723,361.64
  5. Step 5: Solve for x
    x = 3,723,361.64/2,213.55
  6. Step 6: Final answer
    x = 1,682.08

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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.