Home / 2,119.85-3,161.75-2,082.95

Finding the Fourth Proportional to 2,119.85, 3,161.75 and 2,082.95

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Solution

The fourth proportional to 2,119.85, 3,161.75 and 2,082.95 is: 3,106.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.85 : 3,161.75 = 2,082.95 : x
  2. Step 2: Convert to fraction form
    2,119.85/3,161.75 = 2,082.95/x
  3. Step 3: Cross multiply
    2,119.85x = 3,161.75 × 2,082.95
  4. Step 4: Simplify right side
    2,119.85x = 6,585,748.75
  5. Step 5: Solve for x
    x = 6,585,748.75/2,119.85
  6. Step 6: Final answer
    x = 3,106.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.