Home / 3,760.32-5,640.91-2,120.07

Finding the Fourth Proportional to 3,760.32, 5,640.91 and 2,120.07

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Solution

The fourth proportional to 3,760.32, 5,640.91 and 2,120.07 is: 3,180.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,760.32 : 5,640.91 = 2,120.07 : x
  2. Step 2: Convert to fraction form
    3,760.32/5,640.91 = 2,120.07/x
  3. Step 3: Cross multiply
    3,760.32x = 5,640.91 × 2,120.07
  4. Step 4: Simplify right side
    3,760.32x = 11,959,139.92
  5. Step 5: Solve for x
    x = 11,959,139.92/3,760.32
  6. Step 6: Final answer
    x = 3,180.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.