Home / 2,480.16-3,720.38-814.39

Finding the Fourth Proportional to 2,480.16, 3,720.38 and 814.39

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Solution

The fourth proportional to 2,480.16, 3,720.38 and 814.39 is: 1,221.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,480.16 : 3,720.38 = 814.39 : x
  2. Step 2: Convert to fraction form
    2,480.16/3,720.38 = 814.39/x
  3. Step 3: Cross multiply
    2,480.16x = 3,720.38 × 814.39
  4. Step 4: Simplify right side
    2,480.16x = 3,029,840.27
  5. Step 5: Solve for x
    x = 3,029,840.27/2,480.16
  6. Step 6: Final answer
    x = 1,221.63

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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.