Home / 6,511.96-9,768.75-2,128.24

Finding the Fourth Proportional to 6,511.96, 9,768.75 and 2,128.24

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Solution

The fourth proportional to 6,511.96, 9,768.75 and 2,128.24 is: 3,192.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,511.96 : 9,768.75 = 2,128.24 : x
  2. Step 2: Convert to fraction form
    6,511.96/9,768.75 = 2,128.24/x
  3. Step 3: Cross multiply
    6,511.96x = 9,768.75 × 2,128.24
  4. Step 4: Simplify right side
    6,511.96x = 20,790,244.50
  5. Step 5: Solve for x
    x = 20,790,244.50/6,511.96
  6. Step 6: Final answer
    x = 3,192.62

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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.