Home / 1,210.06-1,815.23-516.82

Finding the Fourth Proportional to 1,210.06, 1,815.23 and 516.82

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Solution

The fourth proportional to 1,210.06, 1,815.23 and 516.82 is: 775.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210.06 : 1,815.23 = 516.82 : x
  2. Step 2: Convert to fraction form
    1,210.06/1,815.23 = 516.82/x
  3. Step 3: Cross multiply
    1,210.06x = 1,815.23 × 516.82
  4. Step 4: Simplify right side
    1,210.06x = 938,144.58
  5. Step 5: Solve for x
    x = 938,144.58/1,210.06
  6. Step 6: Final answer
    x = 775.29

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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.