Home / 3,216.76-4,439.04-1,890.43

Finding the Fourth Proportional to 3,216.76, 4,439.04 and 1,890.43

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Solution

The fourth proportional to 3,216.76, 4,439.04 and 1,890.43 is: 2,608.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,216.76 : 4,439.04 = 1,890.43 : x
  2. Step 2: Convert to fraction form
    3,216.76/4,439.04 = 1,890.43/x
  3. Step 3: Cross multiply
    3,216.76x = 4,439.04 × 1,890.43
  4. Step 4: Simplify right side
    3,216.76x = 8,391,694.39
  5. Step 5: Solve for x
    x = 8,391,694.39/3,216.76
  6. Step 6: Final answer
    x = 2,608.74

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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.