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Finding the Fourth Proportional to 7,879.49, 11,818.82 and 2,948.75

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Solution

The fourth proportional to 7,879.49, 11,818.82 and 2,948.75 is: 4,422.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,879.49 : 11,818.82 = 2,948.75 : x
  2. Step 2: Convert to fraction form
    7,879.49/11,818.82 = 2,948.75/x
  3. Step 3: Cross multiply
    7,879.49x = 11,818.82 × 2,948.75
  4. Step 4: Simplify right side
    7,879.49x = 34,850,745.48
  5. Step 5: Solve for x
    x = 34,850,745.48/7,879.49
  6. Step 6: Final answer
    x = 4,422.97

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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.