Home / 7,179.20-10,772.80-3,892.16

Finding the Fourth Proportional to 7,179.20, 10,772.80 and 3,892.16

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Solution

The fourth proportional to 7,179.20, 10,772.80 and 3,892.16 is: 5,840.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,179.20 : 10,772.80 = 3,892.16 : x
  2. Step 2: Convert to fraction form
    7,179.20/10,772.80 = 3,892.16/x
  3. Step 3: Cross multiply
    7,179.20x = 10,772.80 × 3,892.16
  4. Step 4: Simplify right side
    7,179.20x = 41,929,461.25
  5. Step 5: Solve for x
    x = 41,929,461.25/7,179.20
  6. Step 6: Final answer
    x = 5,840.41

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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.