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Finding the Fourth Proportional to 8,539.86, 11,786.67 and 5,003.46

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Solution

The fourth proportional to 8,539.86, 11,786.67 and 5,003.46 is: 6,905.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,539.86 : 11,786.67 = 5,003.46 : x
  2. Step 2: Convert to fraction form
    8,539.86/11,786.67 = 5,003.46/x
  3. Step 3: Cross multiply
    8,539.86x = 11,786.67 × 5,003.46
  4. Step 4: Simplify right side
    8,539.86x = 58,974,131.88
  5. Step 5: Solve for x
    x = 58,974,131.88/8,539.86
  6. Step 6: Final answer
    x = 6,905.75

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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.