Home / 1,338.18-2,007.35-516.46

Finding the Fourth Proportional to 1,338.18, 2,007.35 and 516.46

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Solution

The fourth proportional to 1,338.18, 2,007.35 and 516.46 is: 774.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338.18 : 2,007.35 = 516.46 : x
  2. Step 2: Convert to fraction form
    1,338.18/2,007.35 = 516.46/x
  3. Step 3: Cross multiply
    1,338.18x = 2,007.35 × 516.46
  4. Step 4: Simplify right side
    1,338.18x = 1,036,712.25
  5. Step 5: Solve for x
    x = 1,036,712.25/1,338.18
  6. Step 6: Final answer
    x = 774.72

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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.