Home / 3,786.38-5,225.40-2,215.38

Finding the Fourth Proportional to 3,786.38, 5,225.40 and 2,215.38

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Solution

The fourth proportional to 3,786.38, 5,225.40 and 2,215.38 is: 3,057.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,786.38 : 5,225.40 = 2,215.38 : x
  2. Step 2: Convert to fraction form
    3,786.38/5,225.40 = 2,215.38/x
  3. Step 3: Cross multiply
    3,786.38x = 5,225.40 × 2,215.38
  4. Step 4: Simplify right side
    3,786.38x = 11,576,246.65
  5. Step 5: Solve for x
    x = 11,576,246.65/3,786.38
  6. Step 6: Final answer
    x = 3,057.34

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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.