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Finding the Fourth Proportional to 9,273.42, 12,789.86 and 8,151.97

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Solution

The fourth proportional to 9,273.42, 12,789.86 and 8,151.97 is: 11,243.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,273.42 : 12,789.86 = 8,151.97 : x
  2. Step 2: Convert to fraction form
    9,273.42/12,789.86 = 8,151.97/x
  3. Step 3: Cross multiply
    9,273.42x = 12,789.86 × 8,151.97
  4. Step 4: Simplify right side
    9,273.42x = 104,262,555.02
  5. Step 5: Solve for x
    x = 104,262,555.02/9,273.42
  6. Step 6: Final answer
    x = 11,243.16

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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.