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Finding the Fourth Proportional to 2,751.77, 4,128.60 and 804.26

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Solution

The fourth proportional to 2,751.77, 4,128.60 and 804.26 is: 1,206.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,751.77 : 4,128.60 = 804.26 : x
  2. Step 2: Convert to fraction form
    2,751.77/4,128.60 = 804.26/x
  3. Step 3: Cross multiply
    2,751.77x = 4,128.60 × 804.26
  4. Step 4: Simplify right side
    2,751.77x = 3,320,481.17
  5. Step 5: Solve for x
    x = 3,320,481.17/2,751.77
  6. Step 6: Final answer
    x = 1,206.67

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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.