Home / 5,134.21-7,687.42-2,663.84

Finding the Fourth Proportional to 5,134.21, 7,687.42 and 2,663.84

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Solution

The fourth proportional to 5,134.21, 7,687.42 and 2,663.84 is: 3,988.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,134.21 : 7,687.42 = 2,663.84 : x
  2. Step 2: Convert to fraction form
    5,134.21/7,687.42 = 2,663.84/x
  3. Step 3: Cross multiply
    5,134.21x = 7,687.42 × 2,663.84
  4. Step 4: Simplify right side
    5,134.21x = 20,478,011.80
  5. Step 5: Solve for x
    x = 20,478,011.80/5,134.21
  6. Step 6: Final answer
    x = 3,988.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.