Home / 2,811.66-4,217.69-1,080.28

Finding the Fourth Proportional to 2,811.66, 4,217.69 and 1,080.28

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Solution

The fourth proportional to 2,811.66, 4,217.69 and 1,080.28 is: 1,620.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.66 : 4,217.69 = 1,080.28 : x
  2. Step 2: Convert to fraction form
    2,811.66/4,217.69 = 1,080.28/x
  3. Step 3: Cross multiply
    2,811.66x = 4,217.69 × 1,080.28
  4. Step 4: Simplify right side
    2,811.66x = 4,556,288.05
  5. Step 5: Solve for x
    x = 4,556,288.05/2,811.66
  6. Step 6: Final answer
    x = 1,620.50

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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.