Home / 3,947.37-5,447.49-2,269.11

Finding the Fourth Proportional to 3,947.37, 5,447.49 and 2,269.11

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Solution

The fourth proportional to 3,947.37, 5,447.49 and 2,269.11 is: 3,131.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.37 : 5,447.49 = 2,269.11 : x
  2. Step 2: Convert to fraction form
    3,947.37/5,447.49 = 2,269.11/x
  3. Step 3: Cross multiply
    3,947.37x = 5,447.49 × 2,269.11
  4. Step 4: Simplify right side
    3,947.37x = 12,360,954.03
  5. Step 5: Solve for x
    x = 12,360,954.03/3,947.37
  6. Step 6: Final answer
    x = 3,131.44

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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.