Home / 1,989.23-2,744.83-1,192.37

Finding the Fourth Proportional to 1,989.23, 2,744.83 and 1,192.37

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Solution

The fourth proportional to 1,989.23, 2,744.83 and 1,192.37 is: 1,645.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.23 : 2,744.83 = 1,192.37 : x
  2. Step 2: Convert to fraction form
    1,989.23/2,744.83 = 1,192.37/x
  3. Step 3: Cross multiply
    1,989.23x = 2,744.83 × 1,192.37
  4. Step 4: Simplify right side
    1,989.23x = 3,272,851.01
  5. Step 5: Solve for x
    x = 3,272,851.01/1,989.23
  6. Step 6: Final answer
    x = 1,645.29

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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.