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Finding the Fourth Proportional to 7,838.76, 11,759.76 and 2,644.56

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Solution

The fourth proportional to 7,838.76, 11,759.76 and 2,644.56 is: 3,967.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,838.76 : 11,759.76 = 2,644.56 : x
  2. Step 2: Convert to fraction form
    7,838.76/11,759.76 = 2,644.56/x
  3. Step 3: Cross multiply
    7,838.76x = 11,759.76 × 2,644.56
  4. Step 4: Simplify right side
    7,838.76x = 31,099,390.91
  5. Step 5: Solve for x
    x = 31,099,390.91/7,838.76
  6. Step 6: Final answer
    x = 3,967.39

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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.