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Finding the Fourth Proportional to 7,208.44, 9,947.64 and 3,896.44

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Solution

The fourth proportional to 7,208.44, 9,947.64 and 3,896.44 is: 5,377.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,208.44 : 9,947.64 = 3,896.44 : x
  2. Step 2: Convert to fraction form
    7,208.44/9,947.64 = 3,896.44/x
  3. Step 3: Cross multiply
    7,208.44x = 9,947.64 × 3,896.44
  4. Step 4: Simplify right side
    7,208.44x = 38,760,382.40
  5. Step 5: Solve for x
    x = 38,760,382.40/7,208.44
  6. Step 6: Final answer
    x = 5,377.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.