Home / 2,755.58-4,128.15-2,136.25

Finding the Fourth Proportional to 2,755.58, 4,128.15 and 2,136.25

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Solution

The fourth proportional to 2,755.58, 4,128.15 and 2,136.25 is: 3,200.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,755.58 : 4,128.15 = 2,136.25 : x
  2. Step 2: Convert to fraction form
    2,755.58/4,128.15 = 2,136.25/x
  3. Step 3: Cross multiply
    2,755.58x = 4,128.15 × 2,136.25
  4. Step 4: Simplify right side
    2,755.58x = 8,818,750.12
  5. Step 5: Solve for x
    x = 8,818,750.12/2,755.58
  6. Step 6: Final answer
    x = 3,200.33

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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.