Home / 7,487.56-11,231.32-3,105.12

Finding the Fourth Proportional to 7,487.56, 11,231.32 and 3,105.12

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Solution

The fourth proportional to 7,487.56, 11,231.32 and 3,105.12 is: 4,657.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,487.56 : 11,231.32 = 3,105.12 : x
  2. Step 2: Convert to fraction form
    7,487.56/11,231.32 = 3,105.12/x
  3. Step 3: Cross multiply
    7,487.56x = 11,231.32 × 3,105.12
  4. Step 4: Simplify right side
    7,487.56x = 34,874,596.36
  5. Step 5: Solve for x
    x = 34,874,596.36/7,487.56
  6. Step 6: Final answer
    x = 4,657.67

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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.