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Finding the Fourth Proportional to 5,579.90, 8,361.37 and 3,818.69

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Solution

The fourth proportional to 5,579.90, 8,361.37 and 3,818.69 is: 5,722.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,579.90 : 8,361.37 = 3,818.69 : x
  2. Step 2: Convert to fraction form
    5,579.90/8,361.37 = 3,818.69/x
  3. Step 3: Cross multiply
    5,579.90x = 8,361.37 × 3,818.69
  4. Step 4: Simplify right side
    5,579.90x = 31,929,480.01
  5. Step 5: Solve for x
    x = 31,929,480.01/5,579.90
  6. Step 6: Final answer
    x = 5,722.23

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1.5x scale

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.