Home / 3,390.42-5,084.87-1,722.86

Finding the Fourth Proportional to 3,390.42, 5,084.87 and 1,722.86

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Solution

The fourth proportional to 3,390.42, 5,084.87 and 1,722.86 is: 2,583.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.42 : 5,084.87 = 1,722.86 : x
  2. Step 2: Convert to fraction form
    3,390.42/5,084.87 = 1,722.86/x
  3. Step 3: Cross multiply
    3,390.42x = 5,084.87 × 1,722.86
  4. Step 4: Simplify right side
    3,390.42x = 8,760,485.09
  5. Step 5: Solve for x
    x = 8,760,485.09/3,390.42
  6. Step 6: Final answer
    x = 2,583.89

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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.