Home / 7,972.74-11,951.46-3,811.64

Finding the Fourth Proportional to 7,972.74, 11,951.46 and 3,811.64

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Solution

The fourth proportional to 7,972.74, 11,951.46 and 3,811.64 is: 5,713.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.74 : 11,951.46 = 3,811.64 : x
  2. Step 2: Convert to fraction form
    7,972.74/11,951.46 = 3,811.64/x
  3. Step 3: Cross multiply
    7,972.74x = 11,951.46 × 3,811.64
  4. Step 4: Simplify right side
    7,972.74x = 45,554,603.24
  5. Step 5: Solve for x
    x = 45,554,603.24/7,972.74
  6. Step 6: Final answer
    x = 5,713.80

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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.