Home / 1,725.38-2,381.03-939.43

Finding the Fourth Proportional to 1,725.38, 2,381.03 and 939.43

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Solution

The fourth proportional to 1,725.38, 2,381.03 and 939.43 is: 1,296.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,725.38 : 2,381.03 = 939.43 : x
  2. Step 2: Convert to fraction form
    1,725.38/2,381.03 = 939.43/x
  3. Step 3: Cross multiply
    1,725.38x = 2,381.03 × 939.43
  4. Step 4: Simplify right side
    1,725.38x = 2,236,811.01
  5. Step 5: Solve for x
    x = 2,236,811.01/1,725.38
  6. Step 6: Final answer
    x = 1,296.42

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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.