Home / 3,239.70-4,851.45-2,138.10

Finding the Fourth Proportional to 3,239.70, 4,851.45 and 2,138.10

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Solution

The fourth proportional to 3,239.70, 4,851.45 and 2,138.10 is: 3,201.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,239.70 : 4,851.45 = 2,138.10 : x
  2. Step 2: Convert to fraction form
    3,239.70/4,851.45 = 2,138.10/x
  3. Step 3: Cross multiply
    3,239.70x = 4,851.45 × 2,138.10
  4. Step 4: Simplify right side
    3,239.70x = 10,372,885.25
  5. Step 5: Solve for x
    x = 10,372,885.25/3,239.70
  6. Step 6: Final answer
    x = 3,201.80

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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.