Home / 3,760.72-5,190.24-2,189.36

Finding the Fourth Proportional to 3,760.72, 5,190.24 and 2,189.36

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Solution

The fourth proportional to 3,760.72, 5,190.24 and 2,189.36 is: 3,021.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,760.72 : 5,190.24 = 2,189.36 : x
  2. Step 2: Convert to fraction form
    3,760.72/5,190.24 = 2,189.36/x
  3. Step 3: Cross multiply
    3,760.72x = 5,190.24 × 2,189.36
  4. Step 4: Simplify right side
    3,760.72x = 11,363,303.85
  5. Step 5: Solve for x
    x = 11,363,303.85/3,760.72
  6. Step 6: Final answer
    x = 3,021.58

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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.