Home / 3,945.40-5,918.82-2,277.88

Finding the Fourth Proportional to 3,945.40, 5,918.82 and 2,277.88

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Solution

The fourth proportional to 3,945.40, 5,918.82 and 2,277.88 is: 3,417.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.40 : 5,918.82 = 2,277.88 : x
  2. Step 2: Convert to fraction form
    3,945.40/5,918.82 = 2,277.88/x
  3. Step 3: Cross multiply
    3,945.40x = 5,918.82 × 2,277.88
  4. Step 4: Simplify right side
    3,945.40x = 13,482,361.70
  5. Step 5: Solve for x
    x = 13,482,361.70/3,945.40
  6. Step 6: Final answer
    x = 3,417.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.