Home / 3,728.61-5,145.30-2,235.78

Finding the Fourth Proportional to 3,728.61, 5,145.30 and 2,235.78

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Solution

The fourth proportional to 3,728.61, 5,145.30 and 2,235.78 is: 3,085.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,728.61 : 5,145.30 = 2,235.78 : x
  2. Step 2: Convert to fraction form
    3,728.61/5,145.30 = 2,235.78/x
  3. Step 3: Cross multiply
    3,728.61x = 5,145.30 × 2,235.78
  4. Step 4: Simplify right side
    3,728.61x = 11,503,758.83
  5. Step 5: Solve for x
    x = 11,503,758.83/3,728.61
  6. Step 6: Final answer
    x = 3,085.27

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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.