Home / 1,986.74-2,738.84-1,395.44

Finding the Fourth Proportional to 1,986.74, 2,738.84 and 1,395.44

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Solution

The fourth proportional to 1,986.74, 2,738.84 and 1,395.44 is: 1,923.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.74 : 2,738.84 = 1,395.44 : x
  2. Step 2: Convert to fraction form
    1,986.74/2,738.84 = 1,395.44/x
  3. Step 3: Cross multiply
    1,986.74x = 2,738.84 × 1,395.44
  4. Step 4: Simplify right side
    1,986.74x = 3,821,886.89
  5. Step 5: Solve for x
    x = 3,821,886.89/1,986.74
  6. Step 6: Final answer
    x = 1,923.70

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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.