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Finding the Fourth Proportional to 5,057.79, 6,979.41 and 3,169.31

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Solution

The fourth proportional to 5,057.79, 6,979.41 and 3,169.31 is: 4,373.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,057.79 : 6,979.41 = 3,169.31 : x
  2. Step 2: Convert to fraction form
    5,057.79/6,979.41 = 3,169.31/x
  3. Step 3: Cross multiply
    5,057.79x = 6,979.41 × 3,169.31
  4. Step 4: Simplify right side
    5,057.79x = 22,119,879.01
  5. Step 5: Solve for x
    x = 22,119,879.01/5,057.79
  6. Step 6: Final answer
    x = 4,373.43

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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.