Home / 5,174.96-7,139.14-3,977.81

Finding the Fourth Proportional to 5,174.96, 7,139.14 and 3,977.81

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Solution

The fourth proportional to 5,174.96, 7,139.14 and 3,977.81 is: 5,487.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,174.96 : 7,139.14 = 3,977.81 : x
  2. Step 2: Convert to fraction form
    5,174.96/7,139.14 = 3,977.81/x
  3. Step 3: Cross multiply
    5,174.96x = 7,139.14 × 3,977.81
  4. Step 4: Simplify right side
    5,174.96x = 28,398,142.48
  5. Step 5: Solve for x
    x = 28,398,142.48/5,174.96
  6. Step 6: Final answer
    x = 5,487.61

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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.