Home / 2,542.80-3,811.36-1,308.48

Finding the Fourth Proportional to 2,542.80, 3,811.36 and 1,308.48

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Solution

The fourth proportional to 2,542.80, 3,811.36 and 1,308.48 is: 1,961.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,542.80 : 3,811.36 = 1,308.48 : x
  2. Step 2: Convert to fraction form
    2,542.80/3,811.36 = 1,308.48/x
  3. Step 3: Cross multiply
    2,542.80x = 3,811.36 × 1,308.48
  4. Step 4: Simplify right side
    2,542.80x = 4,987,088.33
  5. Step 5: Solve for x
    x = 4,987,088.33/2,542.80
  6. Step 6: Final answer
    x = 1,961.26

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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.