Home / 2,082.12-3,123.20-1,265.64

Finding the Fourth Proportional to 2,082.12, 3,123.20 and 1,265.64

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Solution

The fourth proportional to 2,082.12, 3,123.20 and 1,265.64 is: 1,898.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,082.12 : 3,123.20 = 1,265.64 : x
  2. Step 2: Convert to fraction form
    2,082.12/3,123.20 = 1,265.64/x
  3. Step 3: Cross multiply
    2,082.12x = 3,123.20 × 1,265.64
  4. Step 4: Simplify right side
    2,082.12x = 3,952,846.85
  5. Step 5: Solve for x
    x = 3,952,846.85/2,082.12
  6. Step 6: Final answer
    x = 1,898.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.