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Finding the Fourth Proportional to 7,936.80, 11,894.40 and 5,296.80

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Solution

The fourth proportional to 7,936.80, 11,894.40 and 5,296.80 is: 7,937.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,936.80 : 11,894.40 = 5,296.80 : x
  2. Step 2: Convert to fraction form
    7,936.80/11,894.40 = 5,296.80/x
  3. Step 3: Cross multiply
    7,936.80x = 11,894.40 × 5,296.80
  4. Step 4: Simplify right side
    7,936.80x = 63,002,257.92
  5. Step 5: Solve for x
    x = 63,002,257.92/7,936.80
  6. Step 6: Final answer
    x = 7,937.99

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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.