Home / 3,860.86-5,791.50-1,087.75

Finding the Fourth Proportional to 3,860.86, 5,791.50 and 1,087.75

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Solution

The fourth proportional to 3,860.86, 5,791.50 and 1,087.75 is: 1,631.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,860.86 : 5,791.50 = 1,087.75 : x
  2. Step 2: Convert to fraction form
    3,860.86/5,791.50 = 1,087.75/x
  3. Step 3: Cross multiply
    3,860.86x = 5,791.50 × 1,087.75
  4. Step 4: Simplify right side
    3,860.86x = 6,299,678.79
  5. Step 5: Solve for x
    x = 6,299,678.79/3,860.86
  6. Step 6: Final answer
    x = 1,631.68

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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.