Home / 6,429.20-9,627.60-4,082.06

Finding the Fourth Proportional to 6,429.20, 9,627.60 and 4,082.06

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Solution

The fourth proportional to 6,429.20, 9,627.60 and 4,082.06 is: 6,112.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,429.20 : 9,627.60 = 4,082.06 : x
  2. Step 2: Convert to fraction form
    6,429.20/9,627.60 = 4,082.06/x
  3. Step 3: Cross multiply
    6,429.20x = 9,627.60 × 4,082.06
  4. Step 4: Simplify right side
    6,429.20x = 39,300,440.86
  5. Step 5: Solve for x
    x = 39,300,440.86/6,429.20
  6. Step 6: Final answer
    x = 6,112.80

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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.