Home / 9,195.03-12,687.80-5,215.37

Finding the Fourth Proportional to 9,195.03, 12,687.80 and 5,215.37

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Solution

The fourth proportional to 9,195.03, 12,687.80 and 5,215.37 is: 7,196.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,195.03 : 12,687.80 = 5,215.37 : x
  2. Step 2: Convert to fraction form
    9,195.03/12,687.80 = 5,215.37/x
  3. Step 3: Cross multiply
    9,195.03x = 12,687.80 × 5,215.37
  4. Step 4: Simplify right side
    9,195.03x = 66,171,481.97
  5. Step 5: Solve for x
    x = 66,171,481.97/9,195.03
  6. Step 6: Final answer
    x = 7,196.44

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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.