Home / 6,408-8,836.74-3,890.52

Finding the Fourth Proportional to 6,408, 8,836.74 and 3,890.52

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Solution

The fourth proportional to 6,408, 8,836.74 and 3,890.52 is: 5,365.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,408 : 8,836.74 = 3,890.52 : x
  2. Step 2: Convert to fraction form
    6,408/8,836.74 = 3,890.52/x
  3. Step 3: Cross multiply
    6,408x = 8,836.74 × 3,890.52
  4. Step 4: Simplify right side
    6,408x = 34,379,513.70
  5. Step 5: Solve for x
    x = 34,379,513.70/6,408
  6. Step 6: Final answer
    x = 5,365.09

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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.