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Finding the Fourth Proportional to 7,351.94, 10,145.79 and 3,994.82

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Solution

The fourth proportional to 7,351.94, 10,145.79 and 3,994.82 is: 5,512.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,351.94 : 10,145.79 = 3,994.82 : x
  2. Step 2: Convert to fraction form
    7,351.94/10,145.79 = 3,994.82/x
  3. Step 3: Cross multiply
    7,351.94x = 10,145.79 × 3,994.82
  4. Step 4: Simplify right side
    7,351.94x = 40,530,630.17
  5. Step 5: Solve for x
    x = 40,530,630.17/7,351.94
  6. Step 6: Final answer
    x = 5,512.91

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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.