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Finding the Fourth Proportional to 6,751.88, 10,129.98 and 2,805.05

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Solution

The fourth proportional to 6,751.88, 10,129.98 and 2,805.05 is: 4,208.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,751.88 : 10,129.98 = 2,805.05 : x
  2. Step 2: Convert to fraction form
    6,751.88/10,129.98 = 2,805.05/x
  3. Step 3: Cross multiply
    6,751.88x = 10,129.98 × 2,805.05
  4. Step 4: Simplify right side
    6,751.88x = 28,415,049.75
  5. Step 5: Solve for x
    x = 28,415,049.75/6,751.88
  6. Step 6: Final answer
    x = 4,208.47

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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.