Home / 5,218.18-7,827.71-2,097.79

Finding the Fourth Proportional to 5,218.18, 7,827.71 and 2,097.79

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Solution

The fourth proportional to 5,218.18, 7,827.71 and 2,097.79 is: 3,146.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.18 : 7,827.71 = 2,097.79 : x
  2. Step 2: Convert to fraction form
    5,218.18/7,827.71 = 2,097.79/x
  3. Step 3: Cross multiply
    5,218.18x = 7,827.71 × 2,097.79
  4. Step 4: Simplify right side
    5,218.18x = 16,420,861.70
  5. Step 5: Solve for x
    x = 16,420,861.70/5,218.18
  6. Step 6: Final answer
    x = 3,146.86

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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.