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Finding the Fourth Proportional to 2,770.36, 4,155.54 and 822.52

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Solution

The fourth proportional to 2,770.36, 4,155.54 and 822.52 is: 1,233.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.36 : 4,155.54 = 822.52 : x
  2. Step 2: Convert to fraction form
    2,770.36/4,155.54 = 822.52/x
  3. Step 3: Cross multiply
    2,770.36x = 4,155.54 × 822.52
  4. Step 4: Simplify right side
    2,770.36x = 3,418,014.76
  5. Step 5: Solve for x
    x = 3,418,014.76/2,770.36
  6. Step 6: Final answer
    x = 1,233.78

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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.