Home / 3,947.46-5,447.61-2,269.20

Finding the Fourth Proportional to 3,947.46, 5,447.61 and 2,269.20

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Solution

The fourth proportional to 3,947.46, 5,447.61 and 2,269.20 is: 3,131.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.46 : 5,447.61 = 2,269.20 : x
  2. Step 2: Convert to fraction form
    3,947.46/5,447.61 = 2,269.20/x
  3. Step 3: Cross multiply
    3,947.46x = 5,447.61 × 2,269.20
  4. Step 4: Simplify right side
    3,947.46x = 12,361,737.04
  5. Step 5: Solve for x
    x = 12,361,737.04/3,947.46
  6. Step 6: Final answer
    x = 3,131.57

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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.