Home / 3,936.46-5,904.69-1,985.98

Finding the Fourth Proportional to 3,936.46, 5,904.69 and 1,985.98

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Solution

The fourth proportional to 3,936.46, 5,904.69 and 1,985.98 is: 2,978.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.46 : 5,904.69 = 1,985.98 : x
  2. Step 2: Convert to fraction form
    3,936.46/5,904.69 = 1,985.98/x
  3. Step 3: Cross multiply
    3,936.46x = 5,904.69 × 1,985.98
  4. Step 4: Simplify right side
    3,936.46x = 11,726,596.25
  5. Step 5: Solve for x
    x = 11,726,596.25/3,936.46
  6. Step 6: Final answer
    x = 2,978.97

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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.