Home / 8,538.39-12,808.91-3,608.05

Finding the Fourth Proportional to 8,538.39, 12,808.91 and 3,608.05

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Solution

The fourth proportional to 8,538.39, 12,808.91 and 3,608.05 is: 5,412.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,538.39 : 12,808.91 = 3,608.05 : x
  2. Step 2: Convert to fraction form
    8,538.39/12,808.91 = 3,608.05/x
  3. Step 3: Cross multiply
    8,538.39x = 12,808.91 × 3,608.05
  4. Step 4: Simplify right side
    8,538.39x = 46,215,187.73
  5. Step 5: Solve for x
    x = 46,215,187.73/8,538.39
  6. Step 6: Final answer
    x = 5,412.63

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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.