Home / 3,108.78-4,284.66-2,765.25

Finding the Fourth Proportional to 3,108.78, 4,284.66 and 2,765.25

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Solution

The fourth proportional to 3,108.78, 4,284.66 and 2,765.25 is: 3,811.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.78 : 4,284.66 = 2,765.25 : x
  2. Step 2: Convert to fraction form
    3,108.78/4,284.66 = 2,765.25/x
  3. Step 3: Cross multiply
    3,108.78x = 4,284.66 × 2,765.25
  4. Step 4: Simplify right side
    3,108.78x = 11,848,156.07
  5. Step 5: Solve for x
    x = 11,848,156.07/3,108.78
  6. Step 6: Final answer
    x = 3,811.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.