Home / 3,784.40-5,680.20-3,237.20

Finding the Fourth Proportional to 3,784.40, 5,680.20 and 3,237.20

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Solution

The fourth proportional to 3,784.40, 5,680.20 and 3,237.20 is: 4,858.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,784.40 : 5,680.20 = 3,237.20 : x
  2. Step 2: Convert to fraction form
    3,784.40/5,680.20 = 3,237.20/x
  3. Step 3: Cross multiply
    3,784.40x = 5,680.20 × 3,237.20
  4. Step 4: Simplify right side
    3,784.40x = 18,387,943.44
  5. Step 5: Solve for x
    x = 18,387,943.44/3,784.40
  6. Step 6: Final answer
    x = 4,858.88

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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.