Home / 3,228.74-4,838.85-1,279.88

Finding the Fourth Proportional to 3,228.74, 4,838.85 and 1,279.88

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Solution

The fourth proportional to 3,228.74, 4,838.85 and 1,279.88 is: 1,918.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,228.74 : 4,838.85 = 1,279.88 : x
  2. Step 2: Convert to fraction form
    3,228.74/4,838.85 = 1,279.88/x
  3. Step 3: Cross multiply
    3,228.74x = 4,838.85 × 1,279.88
  4. Step 4: Simplify right side
    3,228.74x = 6,193,147.34
  5. Step 5: Solve for x
    x = 6,193,147.34/3,228.74
  6. Step 6: Final answer
    x = 1,918.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.