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Finding the Fourth Proportional to 3,540.87, 4,886.31 and 1,947.44

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Solution

The fourth proportional to 3,540.87, 4,886.31 and 1,947.44 is: 2,687.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,540.87 : 4,886.31 = 1,947.44 : x
  2. Step 2: Convert to fraction form
    3,540.87/4,886.31 = 1,947.44/x
  3. Step 3: Cross multiply
    3,540.87x = 4,886.31 × 1,947.44
  4. Step 4: Simplify right side
    3,540.87x = 9,515,771.11
  5. Step 5: Solve for x
    x = 9,515,771.11/3,540.87
  6. Step 6: Final answer
    x = 2,687.41

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1.5x scale

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.