Home / 8,157.21-12,228.75-4,863.38

Finding the Fourth Proportional to 8,157.21, 12,228.75 and 4,863.38

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Solution

The fourth proportional to 8,157.21, 12,228.75 and 4,863.38 is: 7,290.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,157.21 : 12,228.75 = 4,863.38 : x
  2. Step 2: Convert to fraction form
    8,157.21/12,228.75 = 4,863.38/x
  3. Step 3: Cross multiply
    8,157.21x = 12,228.75 × 4,863.38
  4. Step 4: Simplify right side
    8,157.21x = 59,473,034.94
  5. Step 5: Solve for x
    x = 59,473,034.94/8,157.21
  6. Step 6: Final answer
    x = 7,290.86

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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.