Home / 7,718.21-11,577.84-3,821.57

Finding the Fourth Proportional to 7,718.21, 11,577.84 and 3,821.57

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Solution

The fourth proportional to 7,718.21, 11,577.84 and 3,821.57 is: 5,732.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718.21 : 11,577.84 = 3,821.57 : x
  2. Step 2: Convert to fraction form
    7,718.21/11,577.84 = 3,821.57/x
  3. Step 3: Cross multiply
    7,718.21x = 11,577.84 × 3,821.57
  4. Step 4: Simplify right side
    7,718.21x = 44,245,526.01
  5. Step 5: Solve for x
    x = 44,245,526.01/7,718.21
  6. Step 6: Final answer
    x = 5,732.61

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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.