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Finding the Fourth Proportional to 7,891.71, 11,839.71 and 2,627.58

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Solution

The fourth proportional to 7,891.71, 11,839.71 and 2,627.58 is: 3,942.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,891.71 : 11,839.71 = 2,627.58 : x
  2. Step 2: Convert to fraction form
    7,891.71/11,839.71 = 2,627.58/x
  3. Step 3: Cross multiply
    7,891.71x = 11,839.71 × 2,627.58
  4. Step 4: Simplify right side
    7,891.71x = 31,109,785.20
  5. Step 5: Solve for x
    x = 31,109,785.20/7,891.71
  6. Step 6: Final answer
    x = 3,942.08

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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.