Home / 8,751.12-13,128.84-4,074.36

Finding the Fourth Proportional to 8,751.12, 13,128.84 and 4,074.36

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Solution

The fourth proportional to 8,751.12, 13,128.84 and 4,074.36 is: 6,112.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,751.12 : 13,128.84 = 4,074.36 : x
  2. Step 2: Convert to fraction form
    8,751.12/13,128.84 = 4,074.36/x
  3. Step 3: Cross multiply
    8,751.12x = 13,128.84 × 4,074.36
  4. Step 4: Simplify right side
    8,751.12x = 53,491,620.54
  5. Step 5: Solve for x
    x = 53,491,620.54/8,751.12
  6. Step 6: Final answer
    x = 6,112.55

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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.