Home / 7,922.10-11,883.78-2,078.70

Finding the Fourth Proportional to 7,922.10, 11,883.78 and 2,078.70

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Solution

The fourth proportional to 7,922.10, 11,883.78 and 2,078.70 is: 3,118.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,922.10 : 11,883.78 = 2,078.70 : x
  2. Step 2: Convert to fraction form
    7,922.10/11,883.78 = 2,078.70/x
  3. Step 3: Cross multiply
    7,922.10x = 11,883.78 × 2,078.70
  4. Step 4: Simplify right side
    7,922.10x = 24,702,813.49
  5. Step 5: Solve for x
    x = 24,702,813.49/7,922.10
  6. Step 6: Final answer
    x = 3,118.22

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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.