Home / 5,186.34-7,781.45-3,107.82

Finding the Fourth Proportional to 5,186.34, 7,781.45 and 3,107.82

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Solution

The fourth proportional to 5,186.34, 7,781.45 and 3,107.82 is: 4,662.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.34 : 7,781.45 = 3,107.82 : x
  2. Step 2: Convert to fraction form
    5,186.34/7,781.45 = 3,107.82/x
  3. Step 3: Cross multiply
    5,186.34x = 7,781.45 × 3,107.82
  4. Step 4: Simplify right side
    5,186.34x = 24,183,330.40
  5. Step 5: Solve for x
    x = 24,183,330.40/5,186.34
  6. Step 6: Final answer
    x = 4,662.89

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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.