Home / 2,208.43-3,047.71-1,213.78

Finding the Fourth Proportional to 2,208.43, 3,047.71 and 1,213.78

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Solution

The fourth proportional to 2,208.43, 3,047.71 and 1,213.78 is: 1,675.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,208.43 : 3,047.71 = 1,213.78 : x
  2. Step 2: Convert to fraction form
    2,208.43/3,047.71 = 1,213.78/x
  3. Step 3: Cross multiply
    2,208.43x = 3,047.71 × 1,213.78
  4. Step 4: Simplify right side
    2,208.43x = 3,699,249.44
  5. Step 5: Solve for x
    x = 3,699,249.44/2,208.43
  6. Step 6: Final answer
    x = 1,675.06

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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.