Home / 5,122.20-7,684.50-1,659.45

Finding the Fourth Proportional to 5,122.20, 7,684.50 and 1,659.45

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Solution

The fourth proportional to 5,122.20, 7,684.50 and 1,659.45 is: 2,489.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,122.20 : 7,684.50 = 1,659.45 : x
  2. Step 2: Convert to fraction form
    5,122.20/7,684.50 = 1,659.45/x
  3. Step 3: Cross multiply
    5,122.20x = 7,684.50 × 1,659.45
  4. Step 4: Simplify right side
    5,122.20x = 12,752,043.53
  5. Step 5: Solve for x
    x = 12,752,043.53/5,122.20
  6. Step 6: Final answer
    x = 2,489.56

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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.