Home / 3,938.80-5,435.73-2,237.43

Finding the Fourth Proportional to 3,938.80, 5,435.73 and 2,237.43

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Solution

The fourth proportional to 3,938.80, 5,435.73 and 2,237.43 is: 3,087.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.80 : 5,435.73 = 2,237.43 : x
  2. Step 2: Convert to fraction form
    3,938.80/5,435.73 = 2,237.43/x
  3. Step 3: Cross multiply
    3,938.80x = 5,435.73 × 2,237.43
  4. Step 4: Simplify right side
    3,938.80x = 12,162,065.37
  5. Step 5: Solve for x
    x = 12,162,065.37/3,938.80
  6. Step 6: Final answer
    x = 3,087.76

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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.