Home / 4,190.46-6,286.40-1,378.54

Finding the Fourth Proportional to 4,190.46, 6,286.40 and 1,378.54

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Solution

The fourth proportional to 4,190.46, 6,286.40 and 1,378.54 is: 2,068.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,190.46 : 6,286.40 = 1,378.54 : x
  2. Step 2: Convert to fraction form
    4,190.46/6,286.40 = 1,378.54/x
  3. Step 3: Cross multiply
    4,190.46x = 6,286.40 × 1,378.54
  4. Step 4: Simplify right side
    4,190.46x = 8,666,053.86
  5. Step 5: Solve for x
    x = 8,666,053.86/4,190.46
  6. Step 6: Final answer
    x = 2,068.04

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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.