Home / 4,387.20-6,581.20-1,789.60

Finding the Fourth Proportional to 4,387.20, 6,581.20 and 1,789.60

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Solution

The fourth proportional to 4,387.20, 6,581.20 and 1,789.60 is: 2,684.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,387.20 : 6,581.20 = 1,789.60 : x
  2. Step 2: Convert to fraction form
    4,387.20/6,581.20 = 1,789.60/x
  3. Step 3: Cross multiply
    4,387.20x = 6,581.20 × 1,789.60
  4. Step 4: Simplify right side
    4,387.20x = 11,777,715.52
  5. Step 5: Solve for x
    x = 11,777,715.52/4,387.20
  6. Step 6: Final answer
    x = 2,684.56

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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.