Home / 1,725.08-2,380.49-979.06

Finding the Fourth Proportional to 1,725.08, 2,380.49 and 979.06

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Solution

The fourth proportional to 1,725.08, 2,380.49 and 979.06 is: 1,351.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,725.08 : 2,380.49 = 979.06 : x
  2. Step 2: Convert to fraction form
    1,725.08/2,380.49 = 979.06/x
  3. Step 3: Cross multiply
    1,725.08x = 2,380.49 × 979.06
  4. Step 4: Simplify right side
    1,725.08x = 2,330,636.41
  5. Step 5: Solve for x
    x = 2,330,636.41/1,725.08
  6. Step 6: Final answer
    x = 1,351.03

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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.