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Finding the Fourth Proportional to 2,405.78, 3,319.00 and 1,845.26

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Solution

The fourth proportional to 2,405.78, 3,319.00 and 1,845.26 is: 2,545.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,405.78 : 3,319.00 = 1,845.26 : x
  2. Step 2: Convert to fraction form
    2,405.78/3,319.00 = 1,845.26/x
  3. Step 3: Cross multiply
    2,405.78x = 3,319.00 × 1,845.26
  4. Step 4: Simplify right side
    2,405.78x = 6,124,396.73
  5. Step 5: Solve for x
    x = 6,124,396.73/2,405.78
  6. Step 6: Final answer
    x = 2,545.71

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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.