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Finding the Fourth Proportional to 3,871.26, 5,803.11 and 1,272.51

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Solution

The fourth proportional to 3,871.26, 5,803.11 and 1,272.51 is: 1,907.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.26 : 5,803.11 = 1,272.51 : x
  2. Step 2: Convert to fraction form
    3,871.26/5,803.11 = 1,272.51/x
  3. Step 3: Cross multiply
    3,871.26x = 5,803.11 × 1,272.51
  4. Step 4: Simplify right side
    3,871.26x = 7,384,515.51
  5. Step 5: Solve for x
    x = 7,384,515.51/3,871.26
  6. Step 6: Final answer
    x = 1,907.52

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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.