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Finding the Fourth Proportional to 8,732.99, 12,063.78 and 7,788.48

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Solution

The fourth proportional to 8,732.99, 12,063.78 and 7,788.48 is: 10,759.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,732.99 : 12,063.78 = 7,788.48 : x
  2. Step 2: Convert to fraction form
    8,732.99/12,063.78 = 7,788.48/x
  3. Step 3: Cross multiply
    8,732.99x = 12,063.78 × 7,788.48
  4. Step 4: Simplify right side
    8,732.99x = 93,958,409.99
  5. Step 5: Solve for x
    x = 93,958,409.99/8,732.99
  6. Step 6: Final answer
    x = 10,759.03

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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.