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Finding the Fourth Proportional to 8,717.44, 13,123.59 and 7,942.42

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Solution

The fourth proportional to 8,717.44, 13,123.59 and 7,942.42 is: 11,956.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,717.44 : 13,123.59 = 7,942.42 : x
  2. Step 2: Convert to fraction form
    8,717.44/13,123.59 = 7,942.42/x
  3. Step 3: Cross multiply
    8,717.44x = 13,123.59 × 7,942.42
  4. Step 4: Simplify right side
    8,717.44x = 104,233,063.69
  5. Step 5: Solve for x
    x = 104,233,063.69/8,717.44
  6. Step 6: Final answer
    x = 11,956.84

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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.