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Finding the Fourth Proportional to 2,756, 3,803.37 and 1,577

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Solution

The fourth proportional to 2,756, 3,803.37 and 1,577 is: 2,176.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,756 : 3,803.37 = 1,577 : x
  2. Step 2: Convert to fraction form
    2,756/3,803.37 = 1,577/x
  3. Step 3: Cross multiply
    2,756x = 3,803.37 × 1,577
  4. Step 4: Simplify right side
    2,756x = 5,997,914.49
  5. Step 5: Solve for x
    x = 5,997,914.49/2,756
  6. Step 6: Final answer
    x = 2,176.31

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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.