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Finding the Fourth Proportional to 8,751.88, 13,131.42 and 6,820.84

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Solution

The fourth proportional to 8,751.88, 13,131.42 and 6,820.84 is: 10,234.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,751.88 : 13,131.42 = 6,820.84 : x
  2. Step 2: Convert to fraction form
    8,751.88/13,131.42 = 6,820.84/x
  3. Step 3: Cross multiply
    8,751.88x = 13,131.42 × 6,820.84
  4. Step 4: Simplify right side
    8,751.88x = 89,567,314.79
  5. Step 5: Solve for x
    x = 89,567,314.79/8,751.88
  6. Step 6: Final answer
    x = 10,234.07

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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.