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Finding the Fourth Proportional to 3,228, 4,454.72 and 1,756

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Solution

The fourth proportional to 3,228, 4,454.72 and 1,756 is: 2,423.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,228 : 4,454.72 = 1,756 : x
  2. Step 2: Convert to fraction form
    3,228/4,454.72 = 1,756/x
  3. Step 3: Cross multiply
    3,228x = 4,454.72 × 1,756
  4. Step 4: Simplify right side
    3,228x = 7,822,488.32
  5. Step 5: Solve for x
    x = 7,822,488.32/3,228
  6. Step 6: Final answer
    x = 2,423.32

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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.