Home / 3,716.20-5,128.78-2,144.26

Finding the Fourth Proportional to 3,716.20, 5,128.78 and 2,144.26

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Solution

The fourth proportional to 3,716.20, 5,128.78 and 2,144.26 is: 2,959.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,716.20 : 5,128.78 = 2,144.26 : x
  2. Step 2: Convert to fraction form
    3,716.20/5,128.78 = 2,144.26/x
  3. Step 3: Cross multiply
    3,716.20x = 5,128.78 × 2,144.26
  4. Step 4: Simplify right side
    3,716.20x = 10,997,437.80
  5. Step 5: Solve for x
    x = 10,997,437.80/3,716.20
  6. Step 6: Final answer
    x = 2,959.32

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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.