Home / 3,231.20-4,851.30-2,068.40

Finding the Fourth Proportional to 3,231.20, 4,851.30 and 2,068.40

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Solution

The fourth proportional to 3,231.20, 4,851.30 and 2,068.40 is: 3,105.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,231.20 : 4,851.30 = 2,068.40 : x
  2. Step 2: Convert to fraction form
    3,231.20/4,851.30 = 2,068.40/x
  3. Step 3: Cross multiply
    3,231.20x = 4,851.30 × 2,068.40
  4. Step 4: Simplify right side
    3,231.20x = 10,034,428.92
  5. Step 5: Solve for x
    x = 10,034,428.92/3,231.20
  6. Step 6: Final answer
    x = 3,105.48

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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.