Home / 7,680.64-11,511.62-4,162.30

Finding the Fourth Proportional to 7,680.64, 11,511.62 and 4,162.30

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Solution

The fourth proportional to 7,680.64, 11,511.62 and 4,162.30 is: 6,238.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,680.64 : 11,511.62 = 4,162.30 : x
  2. Step 2: Convert to fraction form
    7,680.64/11,511.62 = 4,162.30/x
  3. Step 3: Cross multiply
    7,680.64x = 11,511.62 × 4,162.30
  4. Step 4: Simplify right side
    7,680.64x = 47,914,846.70
  5. Step 5: Solve for x
    x = 47,914,846.70/7,680.64
  6. Step 6: Final answer
    x = 6,238.39

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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.