Home / 3,728.88-5,145.72-2,235.92

Finding the Fourth Proportional to 3,728.88, 5,145.72 and 2,235.92

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Solution

The fourth proportional to 3,728.88, 5,145.72 and 2,235.92 is: 3,085.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,728.88 : 5,145.72 = 2,235.92 : x
  2. Step 2: Convert to fraction form
    3,728.88/5,145.72 = 2,235.92/x
  3. Step 3: Cross multiply
    3,728.88x = 5,145.72 × 2,235.92
  4. Step 4: Simplify right side
    3,728.88x = 11,505,418.26
  5. Step 5: Solve for x
    x = 11,505,418.26/3,728.88
  6. Step 6: Final answer
    x = 3,085.49

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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.