Home / 3,918.20-5,878.07-1,144.89

Finding the Fourth Proportional to 3,918.20, 5,878.07 and 1,144.89

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Solution

The fourth proportional to 3,918.20, 5,878.07 and 1,144.89 is: 1,717.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.20 : 5,878.07 = 1,144.89 : x
  2. Step 2: Convert to fraction form
    3,918.20/5,878.07 = 1,144.89/x
  3. Step 3: Cross multiply
    3,918.20x = 5,878.07 × 1,144.89
  4. Step 4: Simplify right side
    3,918.20x = 6,729,723.14
  5. Step 5: Solve for x
    x = 6,729,723.14/3,918.20
  6. Step 6: Final answer
    x = 1,717.55

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1.5x scale

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.