Home / 2,811.06-4,208.28-2,690.78

Finding the Fourth Proportional to 2,811.06, 4,208.28 and 2,690.78

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Solution

The fourth proportional to 2,811.06, 4,208.28 and 2,690.78 is: 4,028.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.06 : 4,208.28 = 2,690.78 : x
  2. Step 2: Convert to fraction form
    2,811.06/4,208.28 = 2,690.78/x
  3. Step 3: Cross multiply
    2,811.06x = 4,208.28 × 2,690.78
  4. Step 4: Simplify right side
    2,811.06x = 11,323,534.62
  5. Step 5: Solve for x
    x = 11,323,534.62/2,811.06
  6. Step 6: Final answer
    x = 4,028.21

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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.