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Finding the Fourth Proportional to 1,830.54, 2,741.09 and 1,213.32

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Solution

The fourth proportional to 1,830.54, 2,741.09 and 1,213.32 is: 1,816.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,830.54 : 2,741.09 = 1,213.32 : x
  2. Step 2: Convert to fraction form
    1,830.54/2,741.09 = 1,213.32/x
  3. Step 3: Cross multiply
    1,830.54x = 2,741.09 × 1,213.32
  4. Step 4: Simplify right side
    1,830.54x = 3,325,813.25
  5. Step 5: Solve for x
    x = 3,325,813.25/1,830.54
  6. Step 6: Final answer
    x = 1,816.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.