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Finding the Fourth Proportional to 2,346.25, 3,519 and 786.25

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Solution

The fourth proportional to 2,346.25, 3,519 and 786.25 is: 1,179.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,346.25 : 3,519 = 786.25 : x
  2. Step 2: Convert to fraction form
    2,346.25/3,519 = 786.25/x
  3. Step 3: Cross multiply
    2,346.25x = 3,519 × 786.25
  4. Step 4: Simplify right side
    2,346.25x = 2,766,813.75
  5. Step 5: Solve for x
    x = 2,766,813.75/2,346.25
  6. Step 6: Final answer
    x = 1,179.25

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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.