Home / 8,428.29-12,653.37-6,481.86

Finding the Fourth Proportional to 8,428.29, 12,653.37 and 6,481.86

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Solution

The fourth proportional to 8,428.29, 12,653.37 and 6,481.86 is: 9,731.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.29 : 12,653.37 = 6,481.86 : x
  2. Step 2: Convert to fraction form
    8,428.29/12,653.37 = 6,481.86/x
  3. Step 3: Cross multiply
    8,428.29x = 12,653.37 × 6,481.86
  4. Step 4: Simplify right side
    8,428.29x = 82,017,372.87
  5. Step 5: Solve for x
    x = 82,017,372.87/8,428.29
  6. Step 6: Final answer
    x = 9,731.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.