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Finding the Fourth Proportional to 7,285.78, 10,930.26 and 2,668.78

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Solution

The fourth proportional to 7,285.78, 10,930.26 and 2,668.78 is: 4,003.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,285.78 : 10,930.26 = 2,668.78 : x
  2. Step 2: Convert to fraction form
    7,285.78/10,930.26 = 2,668.78/x
  3. Step 3: Cross multiply
    7,285.78x = 10,930.26 × 2,668.78
  4. Step 4: Simplify right side
    7,285.78x = 29,170,459.28
  5. Step 5: Solve for x
    x = 29,170,459.28/7,285.78
  6. Step 6: Final answer
    x = 4,003.75

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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.