Home / 3,439.81-4,747.01-1,947.73

Finding the Fourth Proportional to 3,439.81, 4,747.01 and 1,947.73

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Solution

The fourth proportional to 3,439.81, 4,747.01 and 1,947.73 is: 2,687.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,439.81 : 4,747.01 = 1,947.73 : x
  2. Step 2: Convert to fraction form
    3,439.81/4,747.01 = 1,947.73/x
  3. Step 3: Cross multiply
    3,439.81x = 4,747.01 × 1,947.73
  4. Step 4: Simplify right side
    3,439.81x = 9,245,893.79
  5. Step 5: Solve for x
    x = 9,245,893.79/3,439.81
  6. Step 6: Final answer
    x = 2,687.91

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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.