Home / 4,279.03-6,420.75-3,238.72

Finding the Fourth Proportional to 4,279.03, 6,420.75 and 3,238.72

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Solution

The fourth proportional to 4,279.03, 6,420.75 and 3,238.72 is: 4,859.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,279.03 : 6,420.75 = 3,238.72 : x
  2. Step 2: Convert to fraction form
    4,279.03/6,420.75 = 3,238.72/x
  3. Step 3: Cross multiply
    4,279.03x = 6,420.75 × 3,238.72
  4. Step 4: Simplify right side
    4,279.03x = 20,795,011.44
  5. Step 5: Solve for x
    x = 20,795,011.44/4,279.03
  6. Step 6: Final answer
    x = 4,859.75

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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.