Home / 3,110.25-4,665.33-770.28

Finding the Fourth Proportional to 3,110.25, 4,665.33 and 770.28

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Solution

The fourth proportional to 3,110.25, 4,665.33 and 770.28 is: 1,155.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,110.25 : 4,665.33 = 770.28 : x
  2. Step 2: Convert to fraction form
    3,110.25/4,665.33 = 770.28/x
  3. Step 3: Cross multiply
    3,110.25x = 4,665.33 × 770.28
  4. Step 4: Simplify right side
    3,110.25x = 3,593,610.39
  5. Step 5: Solve for x
    x = 3,593,610.39/3,110.25
  6. Step 6: Final answer
    x = 1,155.41

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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.