Home / 3,679.83-5,079.26-2,188.80

Finding the Fourth Proportional to 3,679.83, 5,079.26 and 2,188.80

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Solution

The fourth proportional to 3,679.83, 5,079.26 and 2,188.80 is: 3,021.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.83 : 5,079.26 = 2,188.80 : x
  2. Step 2: Convert to fraction form
    3,679.83/5,079.26 = 2,188.80/x
  3. Step 3: Cross multiply
    3,679.83x = 5,079.26 × 2,188.80
  4. Step 4: Simplify right side
    3,679.83x = 11,117,473.34
  5. Step 5: Solve for x
    x = 11,117,473.34/3,679.83
  6. Step 6: Final answer
    x = 3,021.19

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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.