Home / 2,986.54-4,121.67-1,728.03

Finding the Fourth Proportional to 2,986.54, 4,121.67 and 1,728.03

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Solution

The fourth proportional to 2,986.54, 4,121.67 and 1,728.03 is: 2,384.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.54 : 4,121.67 = 1,728.03 : x
  2. Step 2: Convert to fraction form
    2,986.54/4,121.67 = 1,728.03/x
  3. Step 3: Cross multiply
    2,986.54x = 4,121.67 × 1,728.03
  4. Step 4: Simplify right side
    2,986.54x = 7,122,369.41
  5. Step 5: Solve for x
    x = 7,122,369.41/2,986.54
  6. Step 6: Final answer
    x = 2,384.82

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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.