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Finding the Fourth Proportional to 9,998.28, 14,997.36 and 3,072.78

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Solution

The fourth proportional to 9,998.28, 14,997.36 and 3,072.78 is: 4,609.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,998.28 : 14,997.36 = 3,072.78 : x
  2. Step 2: Convert to fraction form
    9,998.28/14,997.36 = 3,072.78/x
  3. Step 3: Cross multiply
    9,998.28x = 14,997.36 × 3,072.78
  4. Step 4: Simplify right side
    9,998.28x = 46,083,587.86
  5. Step 5: Solve for x
    x = 46,083,587.86/9,998.28
  6. Step 6: Final answer
    x = 4,609.15

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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.