Home / 1,998.09-2,759.27-1,889.01

Finding the Fourth Proportional to 1,998.09, 2,759.27 and 1,889.01

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Solution

The fourth proportional to 1,998.09, 2,759.27 and 1,889.01 is: 2,608.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998.09 : 2,759.27 = 1,889.01 : x
  2. Step 2: Convert to fraction form
    1,998.09/2,759.27 = 1,889.01/x
  3. Step 3: Cross multiply
    1,998.09x = 2,759.27 × 1,889.01
  4. Step 4: Simplify right side
    1,998.09x = 5,212,279.18
  5. Step 5: Solve for x
    x = 5,212,279.18/1,998.09
  6. Step 6: Final answer
    x = 2,608.63

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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.