Home / 2,082.63-3,122.40-1,260.71

Finding the Fourth Proportional to 2,082.63, 3,122.40 and 1,260.71

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Solution

The fourth proportional to 2,082.63, 3,122.40 and 1,260.71 is: 1,890.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,082.63 : 3,122.40 = 1,260.71 : x
  2. Step 2: Convert to fraction form
    2,082.63/3,122.40 = 1,260.71/x
  3. Step 3: Cross multiply
    2,082.63x = 3,122.40 × 1,260.71
  4. Step 4: Simplify right side
    2,082.63x = 3,936,420.56
  5. Step 5: Solve for x
    x = 3,936,420.56/2,082.63
  6. Step 6: Final answer
    x = 1,890.12

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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.