Home / 3,129.85-4,694.93-2,581.03

Finding the Fourth Proportional to 3,129.85, 4,694.93 and 2,581.03

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Solution

The fourth proportional to 3,129.85, 4,694.93 and 2,581.03 is: 3,871.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.85 : 4,694.93 = 2,581.03 : x
  2. Step 2: Convert to fraction form
    3,129.85/4,694.93 = 2,581.03/x
  3. Step 3: Cross multiply
    3,129.85x = 4,694.93 × 2,581.03
  4. Step 4: Simplify right side
    3,129.85x = 12,117,757.82
  5. Step 5: Solve for x
    x = 12,117,757.82/3,129.85
  6. Step 6: Final answer
    x = 3,871.67

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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.