Home / 7,790.46-11,690.30-3,112.67

Finding the Fourth Proportional to 7,790.46, 11,690.30 and 3,112.67

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Solution

The fourth proportional to 7,790.46, 11,690.30 and 3,112.67 is: 4,670.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,790.46 : 11,690.30 = 3,112.67 : x
  2. Step 2: Convert to fraction form
    7,790.46/11,690.30 = 3,112.67/x
  3. Step 3: Cross multiply
    7,790.46x = 11,690.30 × 3,112.67
  4. Step 4: Simplify right side
    7,790.46x = 36,388,059.76
  5. Step 5: Solve for x
    x = 36,388,059.76/7,790.46
  6. Step 6: Final answer
    x = 4,670.85

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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.