Home / 1,209.30-1,814.10-516.07

Finding the Fourth Proportional to 1,209.30, 1,814.10 and 516.07

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Solution

The fourth proportional to 1,209.30, 1,814.10 and 516.07 is: 774.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209.30 : 1,814.10 = 516.07 : x
  2. Step 2: Convert to fraction form
    1,209.30/1,814.10 = 516.07/x
  3. Step 3: Cross multiply
    1,209.30x = 1,814.10 × 516.07
  4. Step 4: Simplify right side
    1,209.30x = 936,202.59
  5. Step 5: Solve for x
    x = 936,202.59/1,209.30
  6. Step 6: Final answer
    x = 774.17

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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.