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Finding the Fourth Proportional to 8,716.44, 13,122.09 and 7,941.42

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Solution

The fourth proportional to 8,716.44, 13,122.09 and 7,941.42 is: 11,955.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,716.44 : 13,122.09 = 7,941.42 : x
  2. Step 2: Convert to fraction form
    8,716.44/13,122.09 = 7,941.42/x
  3. Step 3: Cross multiply
    8,716.44x = 13,122.09 × 7,941.42
  4. Step 4: Simplify right side
    8,716.44x = 104,207,988.26
  5. Step 5: Solve for x
    x = 104,207,988.26/8,716.44
  6. Step 6: Final answer
    x = 11,955.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.