Home / 6,421.38-8,857.91-3,768.27

Finding the Fourth Proportional to 6,421.38, 8,857.91 and 3,768.27

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Solution

The fourth proportional to 6,421.38, 8,857.91 and 3,768.27 is: 5,198.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,421.38 : 8,857.91 = 3,768.27 : x
  2. Step 2: Convert to fraction form
    6,421.38/8,857.91 = 3,768.27/x
  3. Step 3: Cross multiply
    6,421.38x = 8,857.91 × 3,768.27
  4. Step 4: Simplify right side
    6,421.38x = 33,378,996.52
  5. Step 5: Solve for x
    x = 33,378,996.52/6,421.38
  6. Step 6: Final answer
    x = 5,198.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.