Home / 2,082.77-2,871.23-1,285.56

Finding the Fourth Proportional to 2,082.77, 2,871.23 and 1,285.56

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Solution

The fourth proportional to 2,082.77, 2,871.23 and 1,285.56 is: 1,772.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,082.77 : 2,871.23 = 1,285.56 : x
  2. Step 2: Convert to fraction form
    2,082.77/2,871.23 = 1,285.56/x
  3. Step 3: Cross multiply
    2,082.77x = 2,871.23 × 1,285.56
  4. Step 4: Simplify right side
    2,082.77x = 3,691,138.44
  5. Step 5: Solve for x
    x = 3,691,138.44/2,082.77
  6. Step 6: Final answer
    x = 1,772.23

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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.