Home / 1,209.20-1,814.67-516.06

Finding the Fourth Proportional to 1,209.20, 1,814.67 and 516.06

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Solution

The fourth proportional to 1,209.20, 1,814.67 and 516.06 is: 774.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209.20 : 1,814.67 = 516.06 : x
  2. Step 2: Convert to fraction form
    1,209.20/1,814.67 = 516.06/x
  3. Step 3: Cross multiply
    1,209.20x = 1,814.67 × 516.06
  4. Step 4: Simplify right side
    1,209.20x = 936,478.60
  5. Step 5: Solve for x
    x = 936,478.60/1,209.20
  6. Step 6: Final answer
    x = 774.46

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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.