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Finding the Fourth Proportional to 9,906.31, 13,669.92 and 5,713.75

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Solution

The fourth proportional to 9,906.31, 13,669.92 and 5,713.75 is: 7,884.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,906.31 : 13,669.92 = 5,713.75 : x
  2. Step 2: Convert to fraction form
    9,906.31/13,669.92 = 5,713.75/x
  3. Step 3: Cross multiply
    9,906.31x = 13,669.92 × 5,713.75
  4. Step 4: Simplify right side
    9,906.31x = 78,106,408.48
  5. Step 5: Solve for x
    x = 78,106,408.48/9,906.31
  6. Step 6: Final answer
    x = 7,884.51

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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.