Home / 3,918.85-5,877.98-1,839.31

Finding the Fourth Proportional to 3,918.85, 5,877.98 and 1,839.31

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Solution

The fourth proportional to 3,918.85, 5,877.98 and 1,839.31 is: 2,758.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.85 : 5,877.98 = 1,839.31 : x
  2. Step 2: Convert to fraction form
    3,918.85/5,877.98 = 1,839.31/x
  3. Step 3: Cross multiply
    3,918.85x = 5,877.98 × 1,839.31
  4. Step 4: Simplify right side
    3,918.85x = 10,811,417.30
  5. Step 5: Solve for x
    x = 10,811,417.30/3,918.85
  6. Step 6: Final answer
    x = 2,758.83

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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.