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Finding the Fourth Proportional to 6,408.58, 8,841.37 and 3,889.79

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Solution

The fourth proportional to 6,408.58, 8,841.37 and 3,889.79 is: 5,366.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,408.58 : 8,841.37 = 3,889.79 : x
  2. Step 2: Convert to fraction form
    6,408.58/8,841.37 = 3,889.79/x
  3. Step 3: Cross multiply
    6,408.58x = 8,841.37 × 3,889.79
  4. Step 4: Simplify right side
    6,408.58x = 34,391,072.61
  5. Step 5: Solve for x
    x = 34,391,072.61/6,408.58
  6. Step 6: Final answer
    x = 5,366.41

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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.