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Finding the Fourth Proportional to 4,757.67, 7,137.90 and 2,125.80

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Solution

The fourth proportional to 4,757.67, 7,137.90 and 2,125.80 is: 3,189.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,757.67 : 7,137.90 = 2,125.80 : x
  2. Step 2: Convert to fraction form
    4,757.67/7,137.90 = 2,125.80/x
  3. Step 3: Cross multiply
    4,757.67x = 7,137.90 × 2,125.80
  4. Step 4: Simplify right side
    4,757.67x = 15,173,747.82
  5. Step 5: Solve for x
    x = 15,173,747.82/4,757.67
  6. Step 6: Final answer
    x = 3,189.32

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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.