Home / 9,198.06-12,693.73-5,421.38

Finding the Fourth Proportional to 9,198.06, 12,693.73 and 5,421.38

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Solution

The fourth proportional to 9,198.06, 12,693.73 and 5,421.38 is: 7,481.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,198.06 : 12,693.73 = 5,421.38 : x
  2. Step 2: Convert to fraction form
    9,198.06/12,693.73 = 5,421.38/x
  3. Step 3: Cross multiply
    9,198.06x = 12,693.73 × 5,421.38
  4. Step 4: Simplify right side
    9,198.06x = 68,817,533.95
  5. Step 5: Solve for x
    x = 68,817,533.95/9,198.06
  6. Step 6: Final answer
    x = 7,481.75

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Half scale
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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.