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Finding the Fourth Proportional to 1,813.83, 2,720.93 and 580.82

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Solution

The fourth proportional to 1,813.83, 2,720.93 and 580.82 is: 871.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,813.83 : 2,720.93 = 580.82 : x
  2. Step 2: Convert to fraction form
    1,813.83/2,720.93 = 580.82/x
  3. Step 3: Cross multiply
    1,813.83x = 2,720.93 × 580.82
  4. Step 4: Simplify right side
    1,813.83x = 1,580,354.05
  5. Step 5: Solve for x
    x = 1,580,354.05/1,813.83
  6. Step 6: Final answer
    x = 871.28

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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.