Home / 2,279.25-3,144.36-1,308.57

Finding the Fourth Proportional to 2,279.25, 3,144.36 and 1,308.57

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Solution

The fourth proportional to 2,279.25, 3,144.36 and 1,308.57 is: 1,805.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.25 : 3,144.36 = 1,308.57 : x
  2. Step 2: Convert to fraction form
    2,279.25/3,144.36 = 1,308.57/x
  3. Step 3: Cross multiply
    2,279.25x = 3,144.36 × 1,308.57
  4. Step 4: Simplify right side
    2,279.25x = 4,114,615.17
  5. Step 5: Solve for x
    x = 4,114,615.17/2,279.25
  6. Step 6: Final answer
    x = 1,805.25

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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.