Home / 3,939.46-5,435.65-2,261.41

Finding the Fourth Proportional to 3,939.46, 5,435.65 and 2,261.41

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Solution

The fourth proportional to 3,939.46, 5,435.65 and 2,261.41 is: 3,120.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.46 : 5,435.65 = 2,261.41 : x
  2. Step 2: Convert to fraction form
    3,939.46/5,435.65 = 2,261.41/x
  3. Step 3: Cross multiply
    3,939.46x = 5,435.65 × 2,261.41
  4. Step 4: Simplify right side
    3,939.46x = 12,292,222.50
  5. Step 5: Solve for x
    x = 12,292,222.50/3,939.46
  6. Step 6: Final answer
    x = 3,120.28

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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.