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Finding the Fourth Proportional to 7,891.07, 11,838.53 and 2,626.07

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Solution

The fourth proportional to 7,891.07, 11,838.53 and 2,626.07 is: 3,939.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,891.07 : 11,838.53 = 2,626.07 : x
  2. Step 2: Convert to fraction form
    7,891.07/11,838.53 = 2,626.07/x
  3. Step 3: Cross multiply
    7,891.07x = 11,838.53 × 2,626.07
  4. Step 4: Simplify right side
    7,891.07x = 31,088,736.15
  5. Step 5: Solve for x
    x = 31,088,736.15/7,891.07
  6. Step 6: Final answer
    x = 3,939.74

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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.