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Finding the Fourth Proportional to 7,926.94, 11,891.07 and 2,661.70

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Solution

The fourth proportional to 7,926.94, 11,891.07 and 2,661.70 is: 3,992.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,926.94 : 11,891.07 = 2,661.70 : x
  2. Step 2: Convert to fraction form
    7,926.94/11,891.07 = 2,661.70/x
  3. Step 3: Cross multiply
    7,926.94x = 11,891.07 × 2,661.70
  4. Step 4: Simplify right side
    7,926.94x = 31,650,461.02
  5. Step 5: Solve for x
    x = 31,650,461.02/7,926.94
  6. Step 6: Final answer
    x = 3,992.77

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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.