Home / 5,211.43-7,814.70-3,020.78

Finding the Fourth Proportional to 5,211.43, 7,814.70 and 3,020.78

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Solution

The fourth proportional to 5,211.43, 7,814.70 and 3,020.78 is: 4,529.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.43 : 7,814.70 = 3,020.78 : x
  2. Step 2: Convert to fraction form
    5,211.43/7,814.70 = 3,020.78/x
  3. Step 3: Cross multiply
    5,211.43x = 7,814.70 × 3,020.78
  4. Step 4: Simplify right side
    5,211.43x = 23,606,509.00
  5. Step 5: Solve for x
    x = 23,606,509.00/5,211.43
  6. Step 6: Final answer
    x = 4,529.76

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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.