Home / 3,311.82-4,571.73-1,985.31

Finding the Fourth Proportional to 3,311.82, 4,571.73 and 1,985.31

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Solution

The fourth proportional to 3,311.82, 4,571.73 and 1,985.31 is: 2,740.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311.82 : 4,571.73 = 1,985.31 : x
  2. Step 2: Convert to fraction form
    3,311.82/4,571.73 = 1,985.31/x
  3. Step 3: Cross multiply
    3,311.82x = 4,571.73 × 1,985.31
  4. Step 4: Simplify right side
    3,311.82x = 9,076,301.29
  5. Step 5: Solve for x
    x = 9,076,301.29/3,311.82
  6. Step 6: Final answer
    x = 2,740.58

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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.