Home / 3,031.84-4,183.57-1,912.35

Finding the Fourth Proportional to 3,031.84, 4,183.57 and 1,912.35

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Solution

The fourth proportional to 3,031.84, 4,183.57 and 1,912.35 is: 2,638.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,031.84 : 4,183.57 = 1,912.35 : x
  2. Step 2: Convert to fraction form
    3,031.84/4,183.57 = 1,912.35/x
  3. Step 3: Cross multiply
    3,031.84x = 4,183.57 × 1,912.35
  4. Step 4: Simplify right side
    3,031.84x = 8,000,450.09
  5. Step 5: Solve for x
    x = 8,000,450.09/3,031.84
  6. Step 6: Final answer
    x = 2,638.81

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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.