Home / 1,393.23-2,090.90-516.27

Finding the Fourth Proportional to 1,393.23, 2,090.90 and 516.27

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Solution

The fourth proportional to 1,393.23, 2,090.90 and 516.27 is: 774.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393.23 : 2,090.90 = 516.27 : x
  2. Step 2: Convert to fraction form
    1,393.23/2,090.90 = 516.27/x
  3. Step 3: Cross multiply
    1,393.23x = 2,090.90 × 516.27
  4. Step 4: Simplify right side
    1,393.23x = 1,079,466.31
  5. Step 5: Solve for x
    x = 1,079,466.31/1,393.23
  6. Step 6: Final answer
    x = 774.79

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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.