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Finding the Fourth Proportional to 3,959.37, 5,936.61 and 1,876.55

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Solution

The fourth proportional to 3,959.37, 5,936.61 and 1,876.55 is: 2,813.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.37 : 5,936.61 = 1,876.55 : x
  2. Step 2: Convert to fraction form
    3,959.37/5,936.61 = 1,876.55/x
  3. Step 3: Cross multiply
    3,959.37x = 5,936.61 × 1,876.55
  4. Step 4: Simplify right side
    3,959.37x = 11,140,315.81
  5. Step 5: Solve for x
    x = 11,140,315.81/3,959.37
  6. Step 6: Final answer
    x = 2,813.66

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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.