Home / 4,721.45-6,517.08-3,228.80

Finding the Fourth Proportional to 4,721.45, 6,517.08 and 3,228.80

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Solution

The fourth proportional to 4,721.45, 6,517.08 and 3,228.80 is: 4,456.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,721.45 : 6,517.08 = 3,228.80 : x
  2. Step 2: Convert to fraction form
    4,721.45/6,517.08 = 3,228.80/x
  3. Step 3: Cross multiply
    4,721.45x = 6,517.08 × 3,228.80
  4. Step 4: Simplify right side
    4,721.45x = 21,042,315.32
  5. Step 5: Solve for x
    x = 21,042,315.32/4,721.45
  6. Step 6: Final answer
    x = 4,456.75

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Half scale
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Double scale
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1.5x scale

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.