Home / 5,174.28-7,142.58-3,078

Finding the Fourth Proportional to 5,174.28, 7,142.58 and 3,078

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Solution

The fourth proportional to 5,174.28, 7,142.58 and 3,078 is: 4,248.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,174.28 : 7,142.58 = 3,078 : x
  2. Step 2: Convert to fraction form
    5,174.28/7,142.58 = 3,078/x
  3. Step 3: Cross multiply
    5,174.28x = 7,142.58 × 3,078
  4. Step 4: Simplify right side
    5,174.28x = 21,984,861.24
  5. Step 5: Solve for x
    x = 21,984,861.24/5,174.28
  6. Step 6: Final answer
    x = 4,248.87

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.