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Finding the Fourth Proportional to 7,891.60, 11,834.97 and 2,625.50

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Solution

The fourth proportional to 7,891.60, 11,834.97 and 2,625.50 is: 3,937.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,891.60 : 11,834.97 = 2,625.50 : x
  2. Step 2: Convert to fraction form
    7,891.60/11,834.97 = 2,625.50/x
  3. Step 3: Cross multiply
    7,891.60x = 11,834.97 × 2,625.50
  4. Step 4: Simplify right side
    7,891.60x = 31,072,713.74
  5. Step 5: Solve for x
    x = 31,072,713.74/7,891.60
  6. Step 6: Final answer
    x = 3,937.44

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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.