Home / 1,725.73-2,381.49-979.67

Finding the Fourth Proportional to 1,725.73, 2,381.49 and 979.67

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Solution

The fourth proportional to 1,725.73, 2,381.49 and 979.67 is: 1,351.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,725.73 : 2,381.49 = 979.67 : x
  2. Step 2: Convert to fraction form
    1,725.73/2,381.49 = 979.67/x
  3. Step 3: Cross multiply
    1,725.73x = 2,381.49 × 979.67
  4. Step 4: Simplify right side
    1,725.73x = 2,333,080.26
  5. Step 5: Solve for x
    x = 2,333,080.26/1,725.73
  6. Step 6: Final answer
    x = 1,351.94

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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.