Home / 8,109.21-11,190.72-4,751.36

Finding the Fourth Proportional to 8,109.21, 11,190.72 and 4,751.36

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Solution

The fourth proportional to 8,109.21, 11,190.72 and 4,751.36 is: 6,556.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.21 : 11,190.72 = 4,751.36 : x
  2. Step 2: Convert to fraction form
    8,109.21/11,190.72 = 4,751.36/x
  3. Step 3: Cross multiply
    8,109.21x = 11,190.72 × 4,751.36
  4. Step 4: Simplify right side
    8,109.21x = 53,171,143.21
  5. Step 5: Solve for x
    x = 53,171,143.21/8,109.21
  6. Step 6: Final answer
    x = 6,556.88

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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.