Home / 2,082.65-2,874.09-1,138.44

Finding the Fourth Proportional to 2,082.65, 2,874.09 and 1,138.44

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Solution

The fourth proportional to 2,082.65, 2,874.09 and 1,138.44 is: 1,571.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,082.65 : 2,874.09 = 1,138.44 : x
  2. Step 2: Convert to fraction form
    2,082.65/2,874.09 = 1,138.44/x
  3. Step 3: Cross multiply
    2,082.65x = 2,874.09 × 1,138.44
  4. Step 4: Simplify right side
    2,082.65x = 3,271,979.02
  5. Step 5: Solve for x
    x = 3,271,979.02/2,082.65
  6. Step 6: Final answer
    x = 1,571.07

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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.