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Finding the Fourth Proportional to 8,391.03, 11,579.66 and 5,249.01

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Solution

The fourth proportional to 8,391.03, 11,579.66 and 5,249.01 is: 7,243.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.03 : 11,579.66 = 5,249.01 : x
  2. Step 2: Convert to fraction form
    8,391.03/11,579.66 = 5,249.01/x
  3. Step 3: Cross multiply
    8,391.03x = 11,579.66 × 5,249.01
  4. Step 4: Simplify right side
    8,391.03x = 60,781,724.89
  5. Step 5: Solve for x
    x = 60,781,724.89/8,391.03
  6. Step 6: Final answer
    x = 7,243.65

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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.