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Finding the Fourth Proportional to 6,393.98, 8,822.98 and 3,705.28

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Solution

The fourth proportional to 6,393.98, 8,822.98 and 3,705.28 is: 5,112.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,393.98 : 8,822.98 = 3,705.28 : x
  2. Step 2: Convert to fraction form
    6,393.98/8,822.98 = 3,705.28/x
  3. Step 3: Cross multiply
    6,393.98x = 8,822.98 × 3,705.28
  4. Step 4: Simplify right side
    6,393.98x = 32,691,611.33
  5. Step 5: Solve for x
    x = 32,691,611.33/6,393.98
  6. Step 6: Final answer
    x = 5,112.87

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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.