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Finding the Fourth Proportional to 3,876.93, 5,818.37 and 1,930.77

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Solution

The fourth proportional to 3,876.93, 5,818.37 and 1,930.77 is: 2,897.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.93 : 5,818.37 = 1,930.77 : x
  2. Step 2: Convert to fraction form
    3,876.93/5,818.37 = 1,930.77/x
  3. Step 3: Cross multiply
    3,876.93x = 5,818.37 × 1,930.77
  4. Step 4: Simplify right side
    3,876.93x = 11,233,924.59
  5. Step 5: Solve for x
    x = 11,233,924.59/3,876.93
  6. Step 6: Final answer
    x = 2,897.63

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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.