Home / 7,992.20-11,981.64-3,059.12

Finding the Fourth Proportional to 7,992.20, 11,981.64 and 3,059.12

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Solution

The fourth proportional to 7,992.20, 11,981.64 and 3,059.12 is: 4,586.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,992.20 : 11,981.64 = 3,059.12 : x
  2. Step 2: Convert to fraction form
    7,992.20/11,981.64 = 3,059.12/x
  3. Step 3: Cross multiply
    7,992.20x = 11,981.64 × 3,059.12
  4. Step 4: Simplify right side
    7,992.20x = 36,653,274.56
  5. Step 5: Solve for x
    x = 36,653,274.56/7,992.20
  6. Step 6: Final answer
    x = 4,586.13

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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.