Home / 5,179.04-7,145.20-2,939.62

Finding the Fourth Proportional to 5,179.04, 7,145.20 and 2,939.62

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Solution

The fourth proportional to 5,179.04, 7,145.20 and 2,939.62 is: 4,055.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,179.04 : 7,145.20 = 2,939.62 : x
  2. Step 2: Convert to fraction form
    5,179.04/7,145.20 = 2,939.62/x
  3. Step 3: Cross multiply
    5,179.04x = 7,145.20 × 2,939.62
  4. Step 4: Simplify right side
    5,179.04x = 21,004,172.82
  5. Step 5: Solve for x
    x = 21,004,172.82/5,179.04
  6. Step 6: Final answer
    x = 4,055.61

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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.