Home / 5,433.20-8,139.32-3,243.68

Finding the Fourth Proportional to 5,433.20, 8,139.32 and 3,243.68

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Solution

The fourth proportional to 5,433.20, 8,139.32 and 3,243.68 is: 4,859.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,433.20 : 8,139.32 = 3,243.68 : x
  2. Step 2: Convert to fraction form
    5,433.20/8,139.32 = 3,243.68/x
  3. Step 3: Cross multiply
    5,433.20x = 8,139.32 × 3,243.68
  4. Step 4: Simplify right side
    5,433.20x = 26,401,349.50
  5. Step 5: Solve for x
    x = 26,401,349.50/5,433.20
  6. Step 6: Final answer
    x = 4,859.26

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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.