Home / 3,816.69-5,266.86-2,138.10

Finding the Fourth Proportional to 3,816.69, 5,266.86 and 2,138.10

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Solution

The fourth proportional to 3,816.69, 5,266.86 and 2,138.10 is: 2,950.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,816.69 : 5,266.86 = 2,138.10 : x
  2. Step 2: Convert to fraction form
    3,816.69/5,266.86 = 2,138.10/x
  3. Step 3: Cross multiply
    3,816.69x = 5,266.86 × 2,138.10
  4. Step 4: Simplify right side
    3,816.69x = 11,261,073.37
  5. Step 5: Solve for x
    x = 11,261,073.37/3,816.69
  6. Step 6: Final answer
    x = 2,950.48

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1.5x scale

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.