Home / 7,968.30-11,953.05-2,124.78

Finding the Fourth Proportional to 7,968.30, 11,953.05 and 2,124.78

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Solution

The fourth proportional to 7,968.30, 11,953.05 and 2,124.78 is: 3,187.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,968.30 : 11,953.05 = 2,124.78 : x
  2. Step 2: Convert to fraction form
    7,968.30/11,953.05 = 2,124.78/x
  3. Step 3: Cross multiply
    7,968.30x = 11,953.05 × 2,124.78
  4. Step 4: Simplify right side
    7,968.30x = 25,397,601.58
  5. Step 5: Solve for x
    x = 25,397,601.58/7,968.30
  6. Step 6: Final answer
    x = 3,187.33

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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.