Home / 7,946.80-11,922.10-2,399.78

Finding the Fourth Proportional to 7,946.80, 11,922.10 and 2,399.78

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Solution

The fourth proportional to 7,946.80, 11,922.10 and 2,399.78 is: 3,600.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,946.80 : 11,922.10 = 2,399.78 : x
  2. Step 2: Convert to fraction form
    7,946.80/11,922.10 = 2,399.78/x
  3. Step 3: Cross multiply
    7,946.80x = 11,922.10 × 2,399.78
  4. Step 4: Simplify right side
    7,946.80x = 28,610,440.94
  5. Step 5: Solve for x
    x = 28,610,440.94/7,946.80
  6. Step 6: Final answer
    x = 3,600.25

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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.