Home / 1,080.19-1,618.15-516.52

Finding the Fourth Proportional to 1,080.19, 1,618.15 and 516.52

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Solution

The fourth proportional to 1,080.19, 1,618.15 and 516.52 is: 773.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.19 : 1,618.15 = 516.52 : x
  2. Step 2: Convert to fraction form
    1,080.19/1,618.15 = 516.52/x
  3. Step 3: Cross multiply
    1,080.19x = 1,618.15 × 516.52
  4. Step 4: Simplify right side
    1,080.19x = 835,806.84
  5. Step 5: Solve for x
    x = 835,806.84/1,080.19
  6. Step 6: Final answer
    x = 773.76

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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.