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Finding the Fourth Proportional to 2,279.90, 3,195.10 and 2,279.90

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Solution

The fourth proportional to 2,279.90, 3,195.10 and 2,279.90 is: 3,195.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.90 : 3,195.10 = 2,279.90 : x
  2. Step 2: Convert to fraction form
    2,279.90/3,195.10 = 2,279.90/x
  3. Step 3: Cross multiply
    2,279.90x = 3,195.10 × 2,279.90
  4. Step 4: Simplify right side
    2,279.90x = 7,284,508.49
  5. Step 5: Solve for x
    x = 7,284,508.49/2,279.90
  6. Step 6: Final answer
    x = 3,195.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.