Home / 3,931.82-5,425.94-2,163.45

Finding the Fourth Proportional to 3,931.82, 5,425.94 and 2,163.45

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Solution

The fourth proportional to 3,931.82, 5,425.94 and 2,163.45 is: 2,985.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.82 : 5,425.94 = 2,163.45 : x
  2. Step 2: Convert to fraction form
    3,931.82/5,425.94 = 2,163.45/x
  3. Step 3: Cross multiply
    3,931.82x = 5,425.94 × 2,163.45
  4. Step 4: Simplify right side
    3,931.82x = 11,738,749.89
  5. Step 5: Solve for x
    x = 11,738,749.89/3,931.82
  6. Step 6: Final answer
    x = 2,985.58

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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.