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Finding the Fourth Proportional to 5,179.70, 7,147.62 and 2,941.62

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Solution

The fourth proportional to 5,179.70, 7,147.62 and 2,941.62 is: 4,059.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,179.70 : 7,147.62 = 2,941.62 : x
  2. Step 2: Convert to fraction form
    5,179.70/7,147.62 = 2,941.62/x
  3. Step 3: Cross multiply
    5,179.70x = 7,147.62 × 2,941.62
  4. Step 4: Simplify right side
    5,179.70x = 21,025,581.94
  5. Step 5: Solve for x
    x = 21,025,581.94/5,179.70
  6. Step 6: Final answer
    x = 4,059.23

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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.