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Finding the Fourth Proportional to 8,129.54, 11,218.70 and 4,403.54

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Solution

The fourth proportional to 8,129.54, 11,218.70 and 4,403.54 is: 6,076.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129.54 : 11,218.70 = 4,403.54 : x
  2. Step 2: Convert to fraction form
    8,129.54/11,218.70 = 4,403.54/x
  3. Step 3: Cross multiply
    8,129.54x = 11,218.70 × 4,403.54
  4. Step 4: Simplify right side
    8,129.54x = 49,401,994.20
  5. Step 5: Solve for x
    x = 49,401,994.20/8,129.54
  6. Step 6: Final answer
    x = 6,076.85

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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.