Home / 7,986.61-11,979.92-3,057.76

Finding the Fourth Proportional to 7,986.61, 11,979.92 and 3,057.76

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Solution

The fourth proportional to 7,986.61, 11,979.92 and 3,057.76 is: 4,586.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.61 : 11,979.92 = 3,057.76 : x
  2. Step 2: Convert to fraction form
    7,986.61/11,979.92 = 3,057.76/x
  3. Step 3: Cross multiply
    7,986.61x = 11,979.92 × 3,057.76
  4. Step 4: Simplify right side
    7,986.61x = 36,631,720.18
  5. Step 5: Solve for x
    x = 36,631,720.18/7,986.61
  6. Step 6: Final answer
    x = 4,586.64

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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.