Home / 3,728.46-5,140.62-2,842.86

Finding the Fourth Proportional to 3,728.46, 5,140.62 and 2,842.86

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Solution

The fourth proportional to 3,728.46, 5,140.62 and 2,842.86 is: 3,919.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,728.46 : 5,140.62 = 2,842.86 : x
  2. Step 2: Convert to fraction form
    3,728.46/5,140.62 = 2,842.86/x
  3. Step 3: Cross multiply
    3,728.46x = 5,140.62 × 2,842.86
  4. Step 4: Simplify right side
    3,728.46x = 14,614,062.97
  5. Step 5: Solve for x
    x = 14,614,062.97/3,728.46
  6. Step 6: Final answer
    x = 3,919.60

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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.