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Finding the Fourth Proportional to 4,861.37, 6,709.79 and 3,923.39

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Solution

The fourth proportional to 4,861.37, 6,709.79 and 3,923.39 is: 5,415.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,861.37 : 6,709.79 = 3,923.39 : x
  2. Step 2: Convert to fraction form
    4,861.37/6,709.79 = 3,923.39/x
  3. Step 3: Cross multiply
    4,861.37x = 6,709.79 × 3,923.39
  4. Step 4: Simplify right side
    4,861.37x = 26,325,069.82
  5. Step 5: Solve for x
    x = 26,325,069.82/4,861.37
  6. Step 6: Final answer
    x = 5,415.16

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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.