Home / 1,999.03-2,759.39-1,213.15

Finding the Fourth Proportional to 1,999.03, 2,759.39 and 1,213.15

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Solution

The fourth proportional to 1,999.03, 2,759.39 and 1,213.15 is: 1,674.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,999.03 : 2,759.39 = 1,213.15 : x
  2. Step 2: Convert to fraction form
    1,999.03/2,759.39 = 1,213.15/x
  3. Step 3: Cross multiply
    1,999.03x = 2,759.39 × 1,213.15
  4. Step 4: Simplify right side
    1,999.03x = 3,347,553.98
  5. Step 5: Solve for x
    x = 3,347,553.98/1,999.03
  6. Step 6: Final answer
    x = 1,674.59

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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.