Home / 3,805.70-5,247.09-2,910.54

Finding the Fourth Proportional to 3,805.70, 5,247.09 and 2,910.54

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Solution

The fourth proportional to 3,805.70, 5,247.09 and 2,910.54 is: 4,012.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,805.70 : 5,247.09 = 2,910.54 : x
  2. Step 2: Convert to fraction form
    3,805.70/5,247.09 = 2,910.54/x
  3. Step 3: Cross multiply
    3,805.70x = 5,247.09 × 2,910.54
  4. Step 4: Simplify right side
    3,805.70x = 15,271,865.33
  5. Step 5: Solve for x
    x = 15,271,865.33/3,805.70
  6. Step 6: Final answer
    x = 4,012.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.