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Finding the Fourth Proportional to 6,628.91, 9,945.79 and 3,511.22

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Solution

The fourth proportional to 6,628.91, 9,945.79 and 3,511.22 is: 5,268.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,628.91 : 9,945.79 = 3,511.22 : x
  2. Step 2: Convert to fraction form
    6,628.91/9,945.79 = 3,511.22/x
  3. Step 3: Cross multiply
    6,628.91x = 9,945.79 × 3,511.22
  4. Step 4: Simplify right side
    6,628.91x = 34,921,798.26
  5. Step 5: Solve for x
    x = 34,921,798.26/6,628.91
  6. Step 6: Final answer
    x = 5,268.11

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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.