Home / 3,728.60-5,143.20-2,682.08

Finding the Fourth Proportional to 3,728.60, 5,143.20 and 2,682.08

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Solution

The fourth proportional to 3,728.60, 5,143.20 and 2,682.08 is: 3,699.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,728.60 : 5,143.20 = 2,682.08 : x
  2. Step 2: Convert to fraction form
    3,728.60/5,143.20 = 2,682.08/x
  3. Step 3: Cross multiply
    3,728.60x = 5,143.20 × 2,682.08
  4. Step 4: Simplify right side
    3,728.60x = 13,794,473.86
  5. Step 5: Solve for x
    x = 13,794,473.86/3,728.60
  6. Step 6: Final answer
    x = 3,699.64

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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.