Home / 8,322.29-12,481.87-3,878.74

Finding the Fourth Proportional to 8,322.29, 12,481.87 and 3,878.74

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Solution

The fourth proportional to 8,322.29, 12,481.87 and 3,878.74 is: 5,817.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,322.29 : 12,481.87 = 3,878.74 : x
  2. Step 2: Convert to fraction form
    8,322.29/12,481.87 = 3,878.74/x
  3. Step 3: Cross multiply
    8,322.29x = 12,481.87 × 3,878.74
  4. Step 4: Simplify right side
    8,322.29x = 48,413,882.32
  5. Step 5: Solve for x
    x = 48,413,882.32/8,322.29
  6. Step 6: Final answer
    x = 5,817.37

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1.5x scale

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.