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Finding the Fourth Proportional to 1,684.38, 2,324.37 and 938.37

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Solution

The fourth proportional to 1,684.38, 2,324.37 and 938.37 is: 1,294.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,684.38 : 2,324.37 = 938.37 : x
  2. Step 2: Convert to fraction form
    1,684.38/2,324.37 = 938.37/x
  3. Step 3: Cross multiply
    1,684.38x = 2,324.37 × 938.37
  4. Step 4: Simplify right side
    1,684.38x = 2,181,119.08
  5. Step 5: Solve for x
    x = 2,181,119.08/1,684.38
  6. Step 6: Final answer
    x = 1,294.91

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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.