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Finding the Fourth Proportional to 7,236.94, 9,986.97 and 3,924.94

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Solution

The fourth proportional to 7,236.94, 9,986.97 and 3,924.94 is: 5,416.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,236.94 : 9,986.97 = 3,924.94 : x
  2. Step 2: Convert to fraction form
    7,236.94/9,986.97 = 3,924.94/x
  3. Step 3: Cross multiply
    7,236.94x = 9,986.97 × 3,924.94
  4. Step 4: Simplify right side
    7,236.94x = 39,198,247.78
  5. Step 5: Solve for x
    x = 39,198,247.78/7,236.94
  6. Step 6: Final answer
    x = 5,416.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.