Home / 1,982.36-2,739.06-1,912.28

Finding the Fourth Proportional to 1,982.36, 2,739.06 and 1,912.28

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Solution

The fourth proportional to 1,982.36, 2,739.06 and 1,912.28 is: 2,642.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,982.36 : 2,739.06 = 1,912.28 : x
  2. Step 2: Convert to fraction form
    1,982.36/2,739.06 = 1,912.28/x
  3. Step 3: Cross multiply
    1,982.36x = 2,739.06 × 1,912.28
  4. Step 4: Simplify right side
    1,982.36x = 5,237,849.66
  5. Step 5: Solve for x
    x = 5,237,849.66/1,982.36
  6. Step 6: Final answer
    x = 2,642.23

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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.