Home / 5,243.21-7,854.49-2,771.90

Finding the Fourth Proportional to 5,243.21, 7,854.49 and 2,771.90

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Solution

The fourth proportional to 5,243.21, 7,854.49 and 2,771.90 is: 4,152.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,243.21 : 7,854.49 = 2,771.90 : x
  2. Step 2: Convert to fraction form
    5,243.21/7,854.49 = 2,771.90/x
  3. Step 3: Cross multiply
    5,243.21x = 7,854.49 × 2,771.90
  4. Step 4: Simplify right side
    5,243.21x = 21,771,873.54
  5. Step 5: Solve for x
    x = 21,771,873.54/5,243.21
  6. Step 6: Final answer
    x = 4,152.39

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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.