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Finding the Fourth Proportional to 4,505, 6,757.50 and 1,769

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Solution

The fourth proportional to 4,505, 6,757.50 and 1,769 is: 2,653.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,505 : 6,757.50 = 1,769 : x
  2. Step 2: Convert to fraction form
    4,505/6,757.50 = 1,769/x
  3. Step 3: Cross multiply
    4,505x = 6,757.50 × 1,769
  4. Step 4: Simplify right side
    4,505x = 11,954,017.50
  5. Step 5: Solve for x
    x = 11,954,017.50/4,505
  6. Step 6: Final answer
    x = 2,653.50

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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.