Home / 5,415.40-8,120.22-1,716.04

Finding the Fourth Proportional to 5,415.40, 8,120.22 and 1,716.04

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Solution

The fourth proportional to 5,415.40, 8,120.22 and 1,716.04 is: 2,573.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.40 : 8,120.22 = 1,716.04 : x
  2. Step 2: Convert to fraction form
    5,415.40/8,120.22 = 1,716.04/x
  3. Step 3: Cross multiply
    5,415.40x = 8,120.22 × 1,716.04
  4. Step 4: Simplify right side
    5,415.40x = 13,934,622.33
  5. Step 5: Solve for x
    x = 13,934,622.33/5,415.40
  6. Step 6: Final answer
    x = 2,573.15

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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.