Home / 3,480.78-5,223.68-1,372.72

Finding the Fourth Proportional to 3,480.78, 5,223.68 and 1,372.72

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Solution

The fourth proportional to 3,480.78, 5,223.68 and 1,372.72 is: 2,060.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.78 : 5,223.68 = 1,372.72 : x
  2. Step 2: Convert to fraction form
    3,480.78/5,223.68 = 1,372.72/x
  3. Step 3: Cross multiply
    3,480.78x = 5,223.68 × 1,372.72
  4. Step 4: Simplify right side
    3,480.78x = 7,170,650.01
  5. Step 5: Solve for x
    x = 7,170,650.01/3,480.78
  6. Step 6: Final answer
    x = 2,060.07

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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.