Home / 2,639.36-3,958.24-1,100

Finding the Fourth Proportional to 2,639.36, 3,958.24 and 1,100

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Solution

The fourth proportional to 2,639.36, 3,958.24 and 1,100 is: 1,649.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.36 : 3,958.24 = 1,100 : x
  2. Step 2: Convert to fraction form
    2,639.36/3,958.24 = 1,100/x
  3. Step 3: Cross multiply
    2,639.36x = 3,958.24 × 1,100
  4. Step 4: Simplify right side
    2,639.36x = 4,354,064
  5. Step 5: Solve for x
    x = 4,354,064/2,639.36
  6. Step 6: Final answer
    x = 1,649.67

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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.