Home / 2,518.80-3,778.62-1,425.30

Finding the Fourth Proportional to 2,518.80, 3,778.62 and 1,425.30

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Solution

The fourth proportional to 2,518.80, 3,778.62 and 1,425.30 is: 2,138.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,518.80 : 3,778.62 = 1,425.30 : x
  2. Step 2: Convert to fraction form
    2,518.80/3,778.62 = 1,425.30/x
  3. Step 3: Cross multiply
    2,518.80x = 3,778.62 × 1,425.30
  4. Step 4: Simplify right side
    2,518.80x = 5,385,667.09
  5. Step 5: Solve for x
    x = 5,385,667.09/2,518.80
  6. Step 6: Final answer
    x = 2,138.19

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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.