Home / 5,212.80-7,821.66-2,617.56

Finding the Fourth Proportional to 5,212.80, 7,821.66 and 2,617.56

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Solution

The fourth proportional to 5,212.80, 7,821.66 and 2,617.56 is: 3,927.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,212.80 : 7,821.66 = 2,617.56 : x
  2. Step 2: Convert to fraction form
    5,212.80/7,821.66 = 2,617.56/x
  3. Step 3: Cross multiply
    5,212.80x = 7,821.66 × 2,617.56
  4. Step 4: Simplify right side
    5,212.80x = 20,473,664.35
  5. Step 5: Solve for x
    x = 20,473,664.35/5,212.80
  6. Step 6: Final answer
    x = 3,927.58

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.