Home / 1,989.06-2,744.34-1,243.38

Finding the Fourth Proportional to 1,989.06, 2,744.34 and 1,243.38

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Solution

The fourth proportional to 1,989.06, 2,744.34 and 1,243.38 is: 1,715.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.06 : 2,744.34 = 1,243.38 : x
  2. Step 2: Convert to fraction form
    1,989.06/2,744.34 = 1,243.38/x
  3. Step 3: Cross multiply
    1,989.06x = 2,744.34 × 1,243.38
  4. Step 4: Simplify right side
    1,989.06x = 3,412,257.47
  5. Step 5: Solve for x
    x = 3,412,257.47/1,989.06
  6. Step 6: Final answer
    x = 1,715.51

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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.