Home / 3,856.52-5,784.50-1,391.42

Finding the Fourth Proportional to 3,856.52, 5,784.50 and 1,391.42

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Solution

The fourth proportional to 3,856.52, 5,784.50 and 1,391.42 is: 2,087.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,856.52 : 5,784.50 = 1,391.42 : x
  2. Step 2: Convert to fraction form
    3,856.52/5,784.50 = 1,391.42/x
  3. Step 3: Cross multiply
    3,856.52x = 5,784.50 × 1,391.42
  4. Step 4: Simplify right side
    3,856.52x = 8,048,668.99
  5. Step 5: Solve for x
    x = 8,048,668.99/3,856.52
  6. Step 6: Final answer
    x = 2,087.03

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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.