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Finding the Fourth Proportional to 3,555.91, 4,906.97 and 1,983.70

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Solution

The fourth proportional to 3,555.91, 4,906.97 and 1,983.70 is: 2,737.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,555.91 : 4,906.97 = 1,983.70 : x
  2. Step 2: Convert to fraction form
    3,555.91/4,906.97 = 1,983.70/x
  3. Step 3: Cross multiply
    3,555.91x = 4,906.97 × 1,983.70
  4. Step 4: Simplify right side
    3,555.91x = 9,733,944.12
  5. Step 5: Solve for x
    x = 9,733,944.12/3,555.91
  6. Step 6: Final answer
    x = 2,737.40

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Similar ratio
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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.