Home / 7,481.68-11,219.64-2,215.12

Finding the Fourth Proportional to 7,481.68, 11,219.64 and 2,215.12

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Solution

The fourth proportional to 7,481.68, 11,219.64 and 2,215.12 is: 3,321.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,481.68 : 11,219.64 = 2,215.12 : x
  2. Step 2: Convert to fraction form
    7,481.68/11,219.64 = 2,215.12/x
  3. Step 3: Cross multiply
    7,481.68x = 11,219.64 × 2,215.12
  4. Step 4: Simplify right side
    7,481.68x = 24,852,848.96
  5. Step 5: Solve for x
    x = 24,852,848.96/7,481.68
  6. Step 6: Final answer
    x = 3,321.83

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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.