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Finding the Fourth Proportional to 7,866.99, 11,816.69 and 7,604.55

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Solution

The fourth proportional to 7,866.99, 11,816.69 and 7,604.55 is: 11,422.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,866.99 : 11,816.69 = 7,604.55 : x
  2. Step 2: Convert to fraction form
    7,866.99/11,816.69 = 7,604.55/x
  3. Step 3: Cross multiply
    7,866.99x = 11,816.69 × 7,604.55
  4. Step 4: Simplify right side
    7,866.99x = 89,860,571.92
  5. Step 5: Solve for x
    x = 89,860,571.92/7,866.99
  6. Step 6: Final answer
    x = 11,422.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.