Home / 3,816.54-5,266.80-2,138.10

Finding the Fourth Proportional to 3,816.54, 5,266.80 and 2,138.10

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Solution

The fourth proportional to 3,816.54, 5,266.80 and 2,138.10 is: 2,950.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,816.54 : 5,266.80 = 2,138.10 : x
  2. Step 2: Convert to fraction form
    3,816.54/5,266.80 = 2,138.10/x
  3. Step 3: Cross multiply
    3,816.54x = 5,266.80 × 2,138.10
  4. Step 4: Simplify right side
    3,816.54x = 11,260,945.08
  5. Step 5: Solve for x
    x = 11,260,945.08/3,816.54
  6. Step 6: Final answer
    x = 2,950.56

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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.