Home / 2,086.14-3,122.30-1,391.16

Finding the Fourth Proportional to 2,086.14, 3,122.30 and 1,391.16

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Solution

The fourth proportional to 2,086.14, 3,122.30 and 1,391.16 is: 2,082.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,086.14 : 3,122.30 = 1,391.16 : x
  2. Step 2: Convert to fraction form
    2,086.14/3,122.30 = 1,391.16/x
  3. Step 3: Cross multiply
    2,086.14x = 3,122.30 × 1,391.16
  4. Step 4: Simplify right side
    2,086.14x = 4,343,618.87
  5. Step 5: Solve for x
    x = 4,343,618.87/2,086.14
  6. Step 6: Final answer
    x = 2,082.13

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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.