Home / 2,811.36-4,217.04-1,080.39

Finding the Fourth Proportional to 2,811.36, 4,217.04 and 1,080.39

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Solution

The fourth proportional to 2,811.36, 4,217.04 and 1,080.39 is: 1,620.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.36 : 4,217.04 = 1,080.39 : x
  2. Step 2: Convert to fraction form
    2,811.36/4,217.04 = 1,080.39/x
  3. Step 3: Cross multiply
    2,811.36x = 4,217.04 × 1,080.39
  4. Step 4: Simplify right side
    2,811.36x = 4,556,047.85
  5. Step 5: Solve for x
    x = 4,556,047.85/2,811.36
  6. Step 6: Final answer
    x = 1,620.59

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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.