Home / 9,118.26-12,587.94-6,149.70

Finding the Fourth Proportional to 9,118.26, 12,587.94 and 6,149.70

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Solution

The fourth proportional to 9,118.26, 12,587.94 and 6,149.70 is: 8,489.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,118.26 : 12,587.94 = 6,149.70 : x
  2. Step 2: Convert to fraction form
    9,118.26/12,587.94 = 6,149.70/x
  3. Step 3: Cross multiply
    9,118.26x = 12,587.94 × 6,149.70
  4. Step 4: Simplify right side
    9,118.26x = 77,412,054.62
  5. Step 5: Solve for x
    x = 77,412,054.62/9,118.26
  6. Step 6: Final answer
    x = 8,489.78

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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.