Home / 3,987.24-5,495.22-3,243.66

Finding the Fourth Proportional to 3,987.24, 5,495.22 and 3,243.66

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Solution

The fourth proportional to 3,987.24, 5,495.22 and 3,243.66 is: 4,470.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.24 : 5,495.22 = 3,243.66 : x
  2. Step 2: Convert to fraction form
    3,987.24/5,495.22 = 3,243.66/x
  3. Step 3: Cross multiply
    3,987.24x = 5,495.22 × 3,243.66
  4. Step 4: Simplify right side
    3,987.24x = 17,824,625.31
  5. Step 5: Solve for x
    x = 17,824,625.31/3,987.24
  6. Step 6: Final answer
    x = 4,470.42

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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.