Home / 2,765.21-4,143.76-2,181.67

Finding the Fourth Proportional to 2,765.21, 4,143.76 and 2,181.67

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Solution

The fourth proportional to 2,765.21, 4,143.76 and 2,181.67 is: 3,269.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,765.21 : 4,143.76 = 2,181.67 : x
  2. Step 2: Convert to fraction form
    2,765.21/4,143.76 = 2,181.67/x
  3. Step 3: Cross multiply
    2,765.21x = 4,143.76 × 2,181.67
  4. Step 4: Simplify right side
    2,765.21x = 9,040,301.07
  5. Step 5: Solve for x
    x = 9,040,301.07/2,765.21
  6. Step 6: Final answer
    x = 3,269.31

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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.