Home / 4,188.80-6,279.60-2,136.80

Finding the Fourth Proportional to 4,188.80, 6,279.60 and 2,136.80

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Solution

The fourth proportional to 4,188.80, 6,279.60 and 2,136.80 is: 3,203.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,188.80 : 6,279.60 = 2,136.80 : x
  2. Step 2: Convert to fraction form
    4,188.80/6,279.60 = 2,136.80/x
  3. Step 3: Cross multiply
    4,188.80x = 6,279.60 × 2,136.80
  4. Step 4: Simplify right side
    4,188.80x = 13,418,249.28
  5. Step 5: Solve for x
    x = 13,418,249.28/4,188.80
  6. Step 6: Final answer
    x = 3,203.36

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1.5x scale

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.