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Finding the Fourth Proportional to 8,891.05, 12,260.44 and 7,636.26

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Solution

The fourth proportional to 8,891.05, 12,260.44 and 7,636.26 is: 10,530.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,891.05 : 12,260.44 = 7,636.26 : x
  2. Step 2: Convert to fraction form
    8,891.05/12,260.44 = 7,636.26/x
  3. Step 3: Cross multiply
    8,891.05x = 12,260.44 × 7,636.26
  4. Step 4: Simplify right side
    8,891.05x = 93,623,907.55
  5. Step 5: Solve for x
    x = 93,623,907.55/8,891.05
  6. Step 6: Final answer
    x = 10,530.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.