Home / 3,970.11-5,953.44-2,120.82

Finding the Fourth Proportional to 3,970.11, 5,953.44 and 2,120.82

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Solution

The fourth proportional to 3,970.11, 5,953.44 and 2,120.82 is: 3,180.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.11 : 5,953.44 = 2,120.82 : x
  2. Step 2: Convert to fraction form
    3,970.11/5,953.44 = 2,120.82/x
  3. Step 3: Cross multiply
    3,970.11x = 5,953.44 × 2,120.82
  4. Step 4: Simplify right side
    3,970.11x = 12,626,174.62
  5. Step 5: Solve for x
    x = 12,626,174.62/3,970.11
  6. Step 6: Final answer
    x = 3,180.31

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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.