Home / 1,684.82-2,324.17-985.79

Finding the Fourth Proportional to 1,684.82, 2,324.17 and 985.79

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Solution

The fourth proportional to 1,684.82, 2,324.17 and 985.79 is: 1,359.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,684.82 : 2,324.17 = 985.79 : x
  2. Step 2: Convert to fraction form
    1,684.82/2,324.17 = 985.79/x
  3. Step 3: Cross multiply
    1,684.82x = 2,324.17 × 985.79
  4. Step 4: Simplify right side
    1,684.82x = 2,291,143.54
  5. Step 5: Solve for x
    x = 2,291,143.54/1,684.82
  6. Step 6: Final answer
    x = 1,359.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.