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Finding the Fourth Proportional to 2,757.05, 3,804.80 and 1,578.50

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Solution

The fourth proportional to 2,757.05, 3,804.80 and 1,578.50 is: 2,178.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,757.05 : 3,804.80 = 1,578.50 : x
  2. Step 2: Convert to fraction form
    2,757.05/3,804.80 = 1,578.50/x
  3. Step 3: Cross multiply
    2,757.05x = 3,804.80 × 1,578.50
  4. Step 4: Simplify right side
    2,757.05x = 6,005,849.88
  5. Step 5: Solve for x
    x = 6,005,849.88/2,757.05
  6. Step 6: Final answer
    x = 2,178.36

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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.