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Finding the Fourth Proportional to 4,842.54, 7,250.76 and 3,078

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Solution

The fourth proportional to 4,842.54, 7,250.76 and 3,078 is: 4,608.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,842.54 : 7,250.76 = 3,078 : x
  2. Step 2: Convert to fraction form
    4,842.54/7,250.76 = 3,078/x
  3. Step 3: Cross multiply
    4,842.54x = 7,250.76 × 3,078
  4. Step 4: Simplify right side
    4,842.54x = 22,317,839.28
  5. Step 5: Solve for x
    x = 22,317,839.28/4,842.54
  6. Step 6: Final answer
    x = 4,608.71

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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.