Home / 1,813.69-2,485.46-1,638.73

Finding the Fourth Proportional to 1,813.69, 2,485.46 and 1,638.73

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Solution

The fourth proportional to 1,813.69, 2,485.46 and 1,638.73 is: 2,245.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,813.69 : 2,485.46 = 1,638.73 : x
  2. Step 2: Convert to fraction form
    1,813.69/2,485.46 = 1,638.73/x
  3. Step 3: Cross multiply
    1,813.69x = 2,485.46 × 1,638.73
  4. Step 4: Simplify right side
    1,813.69x = 4,072,997.87
  5. Step 5: Solve for x
    x = 4,072,997.87/1,813.69
  6. Step 6: Final answer
    x = 2,245.70

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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 (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.