Home / 3,748.49-5,169.57-2,420.80

Finding the Fourth Proportional to 3,748.49, 5,169.57 and 2,420.80

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Solution

The fourth proportional to 3,748.49, 5,169.57 and 2,420.80 is: 3,338.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,748.49 : 5,169.57 = 2,420.80 : x
  2. Step 2: Convert to fraction form
    3,748.49/5,169.57 = 2,420.80/x
  3. Step 3: Cross multiply
    3,748.49x = 5,169.57 × 2,420.80
  4. Step 4: Simplify right side
    3,748.49x = 12,514,469.21
  5. Step 5: Solve for x
    x = 12,514,469.21/3,748.49
  6. Step 6: Final answer
    x = 3,338.54

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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.