Home / 5,475.60-8,212.68-2,190.60

Finding the Fourth Proportional to 5,475.60, 8,212.68 and 2,190.60

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Solution

The fourth proportional to 5,475.60, 8,212.68 and 2,190.60 is: 3,285.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,475.60 : 8,212.68 = 2,190.60 : x
  2. Step 2: Convert to fraction form
    5,475.60/8,212.68 = 2,190.60/x
  3. Step 3: Cross multiply
    5,475.60x = 8,212.68 × 2,190.60
  4. Step 4: Simplify right side
    5,475.60x = 17,990,696.81
  5. Step 5: Solve for x
    x = 17,990,696.81/5,475.60
  6. Step 6: Final answer
    x = 3,285.61

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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.