Home / 3,940.34-5,905.64-2,185.26

Finding the Fourth Proportional to 3,940.34, 5,905.64 and 2,185.26

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Solution

The fourth proportional to 3,940.34, 5,905.64 and 2,185.26 is: 3,275.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.34 : 5,905.64 = 2,185.26 : x
  2. Step 2: Convert to fraction form
    3,940.34/5,905.64 = 2,185.26/x
  3. Step 3: Cross multiply
    3,940.34x = 5,905.64 × 2,185.26
  4. Step 4: Simplify right side
    3,940.34x = 12,905,347.94
  5. Step 5: Solve for x
    x = 12,905,347.94/3,940.34
  6. Step 6: Final answer
    x = 3,275.19

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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.