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Finding the Fourth Proportional to 5,709.56, 7,879.50 and 3,471.08

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Solution

The fourth proportional to 5,709.56, 7,879.50 and 3,471.08 is: 4,790.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,709.56 : 7,879.50 = 3,471.08 : x
  2. Step 2: Convert to fraction form
    5,709.56/7,879.50 = 3,471.08/x
  3. Step 3: Cross multiply
    5,709.56x = 7,879.50 × 3,471.08
  4. Step 4: Simplify right side
    5,709.56x = 27,350,335.46
  5. Step 5: Solve for x
    x = 27,350,335.46/5,709.56
  6. Step 6: Final answer
    x = 4,790.27

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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.