Home / 1,081.38-1,621.73-350.79

Finding the Fourth Proportional to 1,081.38, 1,621.73 and 350.79

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Solution

The fourth proportional to 1,081.38, 1,621.73 and 350.79 is: 526.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081.38 : 1,621.73 = 350.79 : x
  2. Step 2: Convert to fraction form
    1,081.38/1,621.73 = 350.79/x
  3. Step 3: Cross multiply
    1,081.38x = 1,621.73 × 350.79
  4. Step 4: Simplify right side
    1,081.38x = 568,881.46
  5. Step 5: Solve for x
    x = 568,881.46/1,081.38
  6. Step 6: Final answer
    x = 526.07

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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.