Home / 1,647.36-2,473.92-1,212.96

Finding the Fourth Proportional to 1,647.36, 2,473.92 and 1,212.96

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Solution

The fourth proportional to 1,647.36, 2,473.92 and 1,212.96 is: 1,821.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.36 : 2,473.92 = 1,212.96 : x
  2. Step 2: Convert to fraction form
    1,647.36/2,473.92 = 1,212.96/x
  3. Step 3: Cross multiply
    1,647.36x = 2,473.92 × 1,212.96
  4. Step 4: Simplify right side
    1,647.36x = 3,000,766.00
  5. Step 5: Solve for x
    x = 3,000,766.00/1,647.36
  6. Step 6: Final answer
    x = 1,821.56

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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.