Home / 1,440.90-2,161.47-516.66

Finding the Fourth Proportional to 1,440.90, 2,161.47 and 516.66

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Solution

The fourth proportional to 1,440.90, 2,161.47 and 516.66 is: 775.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.90 : 2,161.47 = 516.66 : x
  2. Step 2: Convert to fraction form
    1,440.90/2,161.47 = 516.66/x
  3. Step 3: Cross multiply
    1,440.90x = 2,161.47 × 516.66
  4. Step 4: Simplify right side
    1,440.90x = 1,116,745.09
  5. Step 5: Solve for x
    x = 1,116,745.09/1,440.90
  6. Step 6: Final answer
    x = 775.03

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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.