Home / 5,121.56-7,685.32-2,159.82

Finding the Fourth Proportional to 5,121.56, 7,685.32 and 2,159.82

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Solution

The fourth proportional to 5,121.56, 7,685.32 and 2,159.82 is: 3,240.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.56 : 7,685.32 = 2,159.82 : x
  2. Step 2: Convert to fraction form
    5,121.56/7,685.32 = 2,159.82/x
  3. Step 3: Cross multiply
    5,121.56x = 7,685.32 × 2,159.82
  4. Step 4: Simplify right side
    5,121.56x = 16,598,907.84
  5. Step 5: Solve for x
    x = 16,598,907.84/5,121.56
  6. Step 6: Final answer
    x = 3,240.99

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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.