Home / 1,440.75-2,161.58-516.29

Finding the Fourth Proportional to 1,440.75, 2,161.58 and 516.29

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Solution

The fourth proportional to 1,440.75, 2,161.58 and 516.29 is: 774.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.75 : 2,161.58 = 516.29 : x
  2. Step 2: Convert to fraction form
    1,440.75/2,161.58 = 516.29/x
  3. Step 3: Cross multiply
    1,440.75x = 2,161.58 × 516.29
  4. Step 4: Simplify right side
    1,440.75x = 1,115,988.75
  5. Step 5: Solve for x
    x = 1,115,988.75/1,440.75
  6. Step 6: Final answer
    x = 774.59

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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.