Home / 1,986.16-2,738.36-1,489.54

Finding the Fourth Proportional to 1,986.16, 2,738.36 and 1,489.54

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Solution

The fourth proportional to 1,986.16, 2,738.36 and 1,489.54 is: 2,053.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.16 : 2,738.36 = 1,489.54 : x
  2. Step 2: Convert to fraction form
    1,986.16/2,738.36 = 1,489.54/x
  3. Step 3: Cross multiply
    1,986.16x = 2,738.36 × 1,489.54
  4. Step 4: Simplify right side
    1,986.16x = 4,078,896.75
  5. Step 5: Solve for x
    x = 4,078,896.75/1,986.16
  6. Step 6: Final answer
    x = 2,053.66

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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.