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Finding the Fourth Proportional to 7,672.73, 11,515.37 and 3,976.07

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Solution

The fourth proportional to 7,672.73, 11,515.37 and 3,976.07 is: 5,967.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,672.73 : 11,515.37 = 3,976.07 : x
  2. Step 2: Convert to fraction form
    7,672.73/11,515.37 = 3,976.07/x
  3. Step 3: Cross multiply
    7,672.73x = 11,515.37 × 3,976.07
  4. Step 4: Simplify right side
    7,672.73x = 45,785,839.74
  5. Step 5: Solve for x
    x = 45,785,839.74/7,672.73
  6. Step 6: Final answer
    x = 5,967.35

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1.5x scale

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.