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Finding the Fourth Proportional to 7,992.69, 11,989.86 and 3,066.45

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Solution

The fourth proportional to 7,992.69, 11,989.86 and 3,066.45 is: 4,599.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,992.69 : 11,989.86 = 3,066.45 : x
  2. Step 2: Convert to fraction form
    7,992.69/11,989.86 = 3,066.45/x
  3. Step 3: Cross multiply
    7,992.69x = 11,989.86 × 3,066.45
  4. Step 4: Simplify right side
    7,992.69x = 36,766,306.20
  5. Step 5: Solve for x
    x = 36,766,306.20/7,992.69
  6. Step 6: Final answer
    x = 4,599.99

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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.