Home / 3,816.21-5,266.52-2,138.00

Finding the Fourth Proportional to 3,816.21, 5,266.52 and 2,138.00

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Solution

The fourth proportional to 3,816.21, 5,266.52 and 2,138.00 is: 2,950.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,816.21 : 5,266.52 = 2,138.00 : x
  2. Step 2: Convert to fraction form
    3,816.21/5,266.52 = 2,138.00/x
  3. Step 3: Cross multiply
    3,816.21x = 5,266.52 × 2,138.00
  4. Step 4: Simplify right side
    3,816.21x = 11,259,790.75
  5. Step 5: Solve for x
    x = 11,259,790.75/3,816.21
  6. Step 6: Final answer
    x = 2,950.51

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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.