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Finding the Fourth Proportional to 4,878.72, 7,313.67 and 1,757.97

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Solution

The fourth proportional to 4,878.72, 7,313.67 and 1,757.97 is: 2,635.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.72 : 7,313.67 = 1,757.97 : x
  2. Step 2: Convert to fraction form
    4,878.72/7,313.67 = 1,757.97/x
  3. Step 3: Cross multiply
    4,878.72x = 7,313.67 × 1,757.97
  4. Step 4: Simplify right side
    4,878.72x = 12,857,212.45
  5. Step 5: Solve for x
    x = 12,857,212.45/4,878.72
  6. Step 6: Final answer
    x = 2,635.37

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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.