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Finding the Fourth Proportional to 6,245.49, 8,619.44 and 3,855.32

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Solution

The fourth proportional to 6,245.49, 8,619.44 and 3,855.32 is: 5,320.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,245.49 : 8,619.44 = 3,855.32 : x
  2. Step 2: Convert to fraction form
    6,245.49/8,619.44 = 3,855.32/x
  3. Step 3: Cross multiply
    6,245.49x = 8,619.44 × 3,855.32
  4. Step 4: Simplify right side
    6,245.49x = 33,230,637.05
  5. Step 5: Solve for x
    x = 33,230,637.05/6,245.49
  6. Step 6: Final answer
    x = 5,320.74

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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.