Home / 2,986.80-4,122.46-1,937.04

Finding the Fourth Proportional to 2,986.80, 4,122.46 and 1,937.04

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Solution

The fourth proportional to 2,986.80, 4,122.46 and 1,937.04 is: 2,673.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.80 : 4,122.46 = 1,937.04 : x
  2. Step 2: Convert to fraction form
    2,986.80/4,122.46 = 1,937.04/x
  3. Step 3: Cross multiply
    2,986.80x = 4,122.46 × 1,937.04
  4. Step 4: Simplify right side
    2,986.80x = 7,985,369.92
  5. Step 5: Solve for x
    x = 7,985,369.92/2,986.80
  6. Step 6: Final answer
    x = 2,673.55

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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.