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Finding the Fourth Proportional to 7,956.52, 11,920.26 and 7,081.72

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Solution

The fourth proportional to 7,956.52, 11,920.26 and 7,081.72 is: 10,609.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,956.52 : 11,920.26 = 7,081.72 : x
  2. Step 2: Convert to fraction form
    7,956.52/11,920.26 = 7,081.72/x
  3. Step 3: Cross multiply
    7,956.52x = 11,920.26 × 7,081.72
  4. Step 4: Simplify right side
    7,956.52x = 84,415,943.65
  5. Step 5: Solve for x
    x = 84,415,943.65/7,956.52
  6. Step 6: Final answer
    x = 10,609.66

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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.