Home / 5,121.19-7,679.52-2,349.61

Finding the Fourth Proportional to 5,121.19, 7,679.52 and 2,349.61

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Solution

The fourth proportional to 5,121.19, 7,679.52 and 2,349.61 is: 3,523.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.19 : 7,679.52 = 2,349.61 : x
  2. Step 2: Convert to fraction form
    5,121.19/7,679.52 = 2,349.61/x
  3. Step 3: Cross multiply
    5,121.19x = 7,679.52 × 2,349.61
  4. Step 4: Simplify right side
    5,121.19x = 18,043,876.99
  5. Step 5: Solve for x
    x = 18,043,876.99/5,121.19
  6. Step 6: Final answer
    x = 3,523.38

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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.