Home / 1,725.09-2,381.05-979.49

Finding the Fourth Proportional to 1,725.09, 2,381.05 and 979.49

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Solution

The fourth proportional to 1,725.09, 2,381.05 and 979.49 is: 1,351.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,725.09 : 2,381.05 = 979.49 : x
  2. Step 2: Convert to fraction form
    1,725.09/2,381.05 = 979.49/x
  3. Step 3: Cross multiply
    1,725.09x = 2,381.05 × 979.49
  4. Step 4: Simplify right side
    1,725.09x = 2,332,212.91
  5. Step 5: Solve for x
    x = 2,332,212.91/1,725.09
  6. Step 6: Final answer
    x = 1,351.93

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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.