Home / 7,915.21-11,874.98-2,651.09

Finding the Fourth Proportional to 7,915.21, 11,874.98 and 2,651.09

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Solution

The fourth proportional to 7,915.21, 11,874.98 and 2,651.09 is: 3,977.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.21 : 11,874.98 = 2,651.09 : x
  2. Step 2: Convert to fraction form
    7,915.21/11,874.98 = 2,651.09/x
  3. Step 3: Cross multiply
    7,915.21x = 11,874.98 × 2,651.09
  4. Step 4: Simplify right side
    7,915.21x = 31,481,568.10
  5. Step 5: Solve for x
    x = 31,481,568.10/7,915.21
  6. Step 6: Final answer
    x = 3,977.35

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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.