Home / 5,179.68-7,143.39-3,080.16

Finding the Fourth Proportional to 5,179.68, 7,143.39 and 3,080.16

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Solution

The fourth proportional to 5,179.68, 7,143.39 and 3,080.16 is: 4,247.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,179.68 : 7,143.39 = 3,080.16 : x
  2. Step 2: Convert to fraction form
    5,179.68/7,143.39 = 3,080.16/x
  3. Step 3: Cross multiply
    5,179.68x = 7,143.39 × 3,080.16
  4. Step 4: Simplify right side
    5,179.68x = 22,002,784.14
  5. Step 5: Solve for x
    x = 22,002,784.14/5,179.68
  6. Step 6: Final answer
    x = 4,247.90

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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.