Home / 7,972.63-11,951.20-3,811.56

Finding the Fourth Proportional to 7,972.63, 11,951.20 and 3,811.56

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Solution

The fourth proportional to 7,972.63, 11,951.20 and 3,811.56 is: 5,713.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.63 : 11,951.20 = 3,811.56 : x
  2. Step 2: Convert to fraction form
    7,972.63/11,951.20 = 3,811.56/x
  3. Step 3: Cross multiply
    7,972.63x = 11,951.20 × 3,811.56
  4. Step 4: Simplify right side
    7,972.63x = 45,552,721.60
  5. Step 5: Solve for x
    x = 45,552,721.60/7,972.63
  6. Step 6: Final answer
    x = 5,713.64

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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.