Home / 8,685.09-13,027.64-3,489.75

Finding the Fourth Proportional to 8,685.09, 13,027.64 and 3,489.75

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Solution

The fourth proportional to 8,685.09, 13,027.64 and 3,489.75 is: 5,234.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.09 : 13,027.64 = 3,489.75 : x
  2. Step 2: Convert to fraction form
    8,685.09/13,027.64 = 3,489.75/x
  3. Step 3: Cross multiply
    8,685.09x = 13,027.64 × 3,489.75
  4. Step 4: Simplify right side
    8,685.09x = 45,463,189.24
  5. Step 5: Solve for x
    x = 45,463,189.24/8,685.09
  6. Step 6: Final answer
    x = 5,234.63

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Similar ratio
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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.