Home / 8,739.88-13,109.61-2,166.12

Finding the Fourth Proportional to 8,739.88, 13,109.61 and 2,166.12

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Solution

The fourth proportional to 8,739.88, 13,109.61 and 2,166.12 is: 3,249.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,739.88 : 13,109.61 = 2,166.12 : x
  2. Step 2: Convert to fraction form
    8,739.88/13,109.61 = 2,166.12/x
  3. Step 3: Cross multiply
    8,739.88x = 13,109.61 × 2,166.12
  4. Step 4: Simplify right side
    8,739.88x = 28,396,988.41
  5. Step 5: Solve for x
    x = 28,396,988.41/8,739.88
  6. Step 6: Final answer
    x = 3,249.13

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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.