Home / 2,986.75-4,121.72-1,744.75

Finding the Fourth Proportional to 2,986.75, 4,121.72 and 1,744.75

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Solution

The fourth proportional to 2,986.75, 4,121.72 and 1,744.75 is: 2,407.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.75 : 4,121.72 = 1,744.75 : x
  2. Step 2: Convert to fraction form
    2,986.75/4,121.72 = 1,744.75/x
  3. Step 3: Cross multiply
    2,986.75x = 4,121.72 × 1,744.75
  4. Step 4: Simplify right side
    2,986.75x = 7,191,370.97
  5. Step 5: Solve for x
    x = 7,191,370.97/2,986.75
  6. Step 6: Final answer
    x = 2,407.76

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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.