Home / 3,247.85-4,480.97-1,987.59

Finding the Fourth Proportional to 3,247.85, 4,480.97 and 1,987.59

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Solution

The fourth proportional to 3,247.85, 4,480.97 and 1,987.59 is: 2,742.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,247.85 : 4,480.97 = 1,987.59 : x
  2. Step 2: Convert to fraction form
    3,247.85/4,480.97 = 1,987.59/x
  3. Step 3: Cross multiply
    3,247.85x = 4,480.97 × 1,987.59
  4. Step 4: Simplify right side
    3,247.85x = 8,906,347.33
  5. Step 5: Solve for x
    x = 8,906,347.33/3,247.85
  6. Step 6: Final answer
    x = 2,742.23

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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.