Home / 7,427.70-11,139.75-2,161.29

Finding the Fourth Proportional to 7,427.70, 11,139.75 and 2,161.29

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Solution

The fourth proportional to 7,427.70, 11,139.75 and 2,161.29 is: 3,241.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,427.70 : 11,139.75 = 2,161.29 : x
  2. Step 2: Convert to fraction form
    7,427.70/11,139.75 = 2,161.29/x
  3. Step 3: Cross multiply
    7,427.70x = 11,139.75 × 2,161.29
  4. Step 4: Simplify right side
    7,427.70x = 24,076,230.28
  5. Step 5: Solve for x
    x = 24,076,230.28/7,427.70
  6. Step 6: Final answer
    x = 3,241.41

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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.