Home / 3,786.50-5,225.69-2,130.82

Finding the Fourth Proportional to 3,786.50, 5,225.69 and 2,130.82

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Solution

The fourth proportional to 3,786.50, 5,225.69 and 2,130.82 is: 2,940.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,786.50 : 5,225.69 = 2,130.82 : x
  2. Step 2: Convert to fraction form
    3,786.50/5,225.69 = 2,130.82/x
  3. Step 3: Cross multiply
    3,786.50x = 5,225.69 × 2,130.82
  4. Step 4: Simplify right side
    3,786.50x = 11,135,004.77
  5. Step 5: Solve for x
    x = 11,135,004.77/3,786.50
  6. Step 6: Final answer
    x = 2,940.71

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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.