Home / 5,119.85-7,679.78-3,661.85

Finding the Fourth Proportional to 5,119.85, 7,679.78 and 3,661.85

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Solution

The fourth proportional to 5,119.85, 7,679.78 and 3,661.85 is: 5,492.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.85 : 7,679.78 = 3,661.85 : x
  2. Step 2: Convert to fraction form
    5,119.85/7,679.78 = 3,661.85/x
  3. Step 3: Cross multiply
    5,119.85x = 7,679.78 × 3,661.85
  4. Step 4: Simplify right side
    5,119.85x = 28,122,145.68
  5. Step 5: Solve for x
    x = 28,122,145.68/5,119.85
  6. Step 6: Final answer
    x = 5,492.77

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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.