Home / 3,138.80-4,701.81-2,519.15

Finding the Fourth Proportional to 3,138.80, 4,701.81 and 2,519.15

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Solution

The fourth proportional to 3,138.80, 4,701.81 and 2,519.15 is: 3,773.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.80 : 4,701.81 = 2,519.15 : x
  2. Step 2: Convert to fraction form
    3,138.80/4,701.81 = 2,519.15/x
  3. Step 3: Cross multiply
    3,138.80x = 4,701.81 × 2,519.15
  4. Step 4: Simplify right side
    3,138.80x = 11,844,564.66
  5. Step 5: Solve for x
    x = 11,844,564.66/3,138.80
  6. Step 6: Final answer
    x = 3,773.60

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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.