Home / 7,986.90-11,972.97-4,082.70

Finding the Fourth Proportional to 7,986.90, 11,972.97 and 4,082.70

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Solution

The fourth proportional to 7,986.90, 11,972.97 and 4,082.70 is: 6,120.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.90 : 11,972.97 = 4,082.70 : x
  2. Step 2: Convert to fraction form
    7,986.90/11,972.97 = 4,082.70/x
  3. Step 3: Cross multiply
    7,986.90x = 11,972.97 × 4,082.70
  4. Step 4: Simplify right side
    7,986.90x = 48,882,044.62
  5. Step 5: Solve for x
    x = 48,882,044.62/7,986.90
  6. Step 6: Final answer
    x = 6,120.28

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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.