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Finding the Fourth Proportional to 8,605.15, 11,844.84 and 7,540.39

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Solution

The fourth proportional to 8,605.15, 11,844.84 and 7,540.39 is: 10,379.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.15 : 11,844.84 = 7,540.39 : x
  2. Step 2: Convert to fraction form
    8,605.15/11,844.84 = 7,540.39/x
  3. Step 3: Cross multiply
    8,605.15x = 11,844.84 × 7,540.39
  4. Step 4: Simplify right side
    8,605.15x = 89,314,713.09
  5. Step 5: Solve for x
    x = 89,314,713.09/8,605.15
  6. Step 6: Final answer
    x = 10,379.22

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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.