Home / 2,082.75-3,121.70-1,157.87

Finding the Fourth Proportional to 2,082.75, 3,121.70 and 1,157.87

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Solution

The fourth proportional to 2,082.75, 3,121.70 and 1,157.87 is: 1,735.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,082.75 : 3,121.70 = 1,157.87 : x
  2. Step 2: Convert to fraction form
    2,082.75/3,121.70 = 1,157.87/x
  3. Step 3: Cross multiply
    2,082.75x = 3,121.70 × 1,157.87
  4. Step 4: Simplify right side
    2,082.75x = 3,614,501.38
  5. Step 5: Solve for x
    x = 3,614,501.38/2,082.75
  6. Step 6: Final answer
    x = 1,735.45

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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.