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Finding the Fourth Proportional to 8,079.75, 12,119.63 and 2,607.75

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Solution

The fourth proportional to 8,079.75, 12,119.63 and 2,607.75 is: 3,911.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,079.75 : 12,119.63 = 2,607.75 : x
  2. Step 2: Convert to fraction form
    8,079.75/12,119.63 = 2,607.75/x
  3. Step 3: Cross multiply
    8,079.75x = 12,119.63 × 2,607.75
  4. Step 4: Simplify right side
    8,079.75x = 31,604,952.09
  5. Step 5: Solve for x
    x = 31,604,952.09/8,079.75
  6. Step 6: Final answer
    x = 3,911.63

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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.