Home / 8,115.75-12,173.63-1,959.75

Finding the Fourth Proportional to 8,115.75, 12,173.63 and 1,959.75

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Solution

The fourth proportional to 8,115.75, 12,173.63 and 1,959.75 is: 2,939.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.75 : 12,173.63 = 1,959.75 : x
  2. Step 2: Convert to fraction form
    8,115.75/12,173.63 = 1,959.75/x
  3. Step 3: Cross multiply
    8,115.75x = 12,173.63 × 1,959.75
  4. Step 4: Simplify right side
    8,115.75x = 23,857,261.59
  5. Step 5: Solve for x
    x = 23,857,261.59/8,115.75
  6. Step 6: Final answer
    x = 2,939.63

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Double scale
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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.