Home / 5,134.50-7,089.42-3,147.78

Finding the Fourth Proportional to 5,134.50, 7,089.42 and 3,147.78

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Solution

The fourth proportional to 5,134.50, 7,089.42 and 3,147.78 is: 4,346.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,134.50 : 7,089.42 = 3,147.78 : x
  2. Step 2: Convert to fraction form
    5,134.50/7,089.42 = 3,147.78/x
  3. Step 3: Cross multiply
    5,134.50x = 7,089.42 × 3,147.78
  4. Step 4: Simplify right side
    5,134.50x = 22,315,934.49
  5. Step 5: Solve for x
    x = 22,315,934.49/5,134.50
  6. Step 6: Final answer
    x = 4,346.27

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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.